Check DNS, Urls + Redirects, Certificates and Content of your Website




B

Missing HSTS or Cookie-warnings

Checked:
15.05.2024 09:05:17


Older results

No older results found


1. IP-Addresses

HostTypeIP-Addressis auth.∑ Queries∑ Timeout
modellierungstag.uni-heidelberg.de
A
129.206.109.250
Heidelberg/Baden-Wurttemberg/Germany (DE) - Universitaet Heidelberg
No Hostname found
yes
2
0

AAAA

yes


www.modellierungstag.uni-heidelberg.de
CNAME
modellierungstag.uni-heidelberg.de
yes
1
0

A
129.206.109.250
Heidelberg/Baden-Wurttemberg/Germany (DE) - Universitaet Heidelberg
No Hostname found
yes


*.uni-heidelberg.de
A
Name Error
yes



AAAA
Name Error
yes



CNAME
Name Error
yes


*.modellierungstag.uni-heidelberg.de
A
Name Error
yes



AAAA
Name Error
yes



CNAME
Name Error
yes



2. DNSSEC

Zone (*)DNSSEC - Informations

Zone: (root)
(root)
1 DS RR published



DS with Algorithm 8, KeyTag 20326, DigestType 2 and Digest 4G1EuAuPHTmpXAsNfGXQhFjogECbvGg0VxBCN8f47I0=



Status: Valid because published



2 DNSKEY RR found



Public Key with Algorithm 8, KeyTag 5613, Flags 256



Public Key with Algorithm 8, KeyTag 20326, Flags 257 (SEP = Secure Entry Point)



1 RRSIG RR to validate DNSKEY RR found



RRSIG-Owner (root), Algorithm: 8, 0 Labels, original TTL: 172800 sec, Signature-expiration: 01.06.2024, 00:00:00 +, Signature-Inception: 11.05.2024, 00:00:00 +, KeyTag 20326, Signer-Name: (root)



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 20326 used to validate the DNSKEY RRSet



Status: Valid Chain of trust. Parent-DS with Algorithm 8, KeyTag 20326, DigestType 2 and Digest "4G1EuAuPHTmpXAsNfGXQhFjogECbvGg0VxBCN8f47I0=" validates local Key with the same values, Key ist Secure Entry Point (SEP) of the zone

Zone: de
de
1 DS RR in the parent zone found



DS with Algorithm 8, KeyTag 26755, DigestType 2 and Digest 80E1eAmllUMRzLgq3hFMbB1ySnXAOVE3qjl4A1Ql540=



1 RRSIG RR to validate DS RR found



RRSIG-Owner de., Algorithm: 8, 1 Labels, original TTL: 86400 sec, Signature-expiration: 28.05.2024, 05:00:00 +, Signature-Inception: 15.05.2024, 04:00:00 +, KeyTag 5613, Signer-Name: (root)



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 5613 used to validate the DS RRSet in the parent zone



3 DNSKEY RR found



Public Key with Algorithm 8, KeyTag 720, Flags 256



Public Key with Algorithm 8, KeyTag 26755, Flags 257 (SEP = Secure Entry Point)



Public Key with Algorithm 8, KeyTag 56445, Flags 256



1 RRSIG RR to validate DNSKEY RR found



RRSIG-Owner de., Algorithm: 8, 1 Labels, original TTL: 86400 sec, Signature-expiration: 24.05.2024, 19:03:02 +, Signature-Inception: 10.05.2024, 17:33:02 +, KeyTag 26755, Signer-Name: de



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 26755 used to validate the DNSKEY RRSet



Status: Valid Chain of trust. Parent-DS with Algorithm 8, KeyTag 26755, DigestType 2 and Digest "80E1eAmllUMRzLgq3hFMbB1ySnXAOVE3qjl4A1Ql540=" validates local Key with the same values, Key ist Secure Entry Point (SEP) of the zone

Zone: uni-heidelberg.de
uni-heidelberg.de
0 DS RR in the parent zone found



DS-Query in the parent zone has a valid NSEC3 RR as result with the hashed query name "20i8ese64qpqb9e8sse2n6mrlggh034f" between the hashed NSEC3-owner "20i7c3e362e3jahut6qma7bb0aveaabg" and the hashed NextOwner "20ia23cdg9i8jssjulp3hj1bhdj5u6dr". So the parent zone confirmes the not-existence of a DS RR.
Bitmap: A, RRSIG Validated: RRSIG-Owner 20i7c3e362e3jahut6qma7bb0aveaabg.de., Algorithm: 8, 2 Labels, original TTL: 7200 sec, Signature-expiration: 26.05.2024, 05:40:50 +, Signature-Inception: 12.05.2024, 04:10:50 +, KeyTag 720, Signer-Name: de



DS-Query in the parent zone sends valid NSEC3 RR with the Hash "tjlb7qbojvmlf1s6gdriru7vsms1lg16" as Owner. That's the Hash of "de" with the NextHashedOwnerName "tjlcsjat4ljtvo0tjncrrdf6kf6onefb". So that domain name is the Closest Encloser of "uni-heidelberg.de". Opt-Out: True.
Bitmap: NS, SOA, RRSIG, DNSKEY, NSEC3PARAM Validated: RRSIG-Owner tjlb7qbojvmlf1s6gdriru7vsms1lg16.de., Algorithm: 8, 2 Labels, original TTL: 7200 sec, Signature-expiration: 23.05.2024, 22:23:13 +, Signature-Inception: 09.05.2024, 20:53:13 +, KeyTag 720, Signer-Name: de



0 DNSKEY RR found




Zone: modellierungstag.uni-heidelberg.de
modellierungstag.uni-heidelberg.de
0 DS RR in the parent zone found



0 DNSKEY RR found




Zone: www.modellierungstag.uni-heidelberg.de
www.modellierungstag.uni-heidelberg.de
0 DS RR in the parent zone found


3. Name Servers

DomainNameserverNS-IP
modellierungstag.uni-heidelberg.de
  dns.uni-heidelberg.de
129.206.100.126
Heidelberg/Baden-Wurttemberg/Germany (DE) - Universitaet Heidelberg


  dns2.uni-heidelberg.de
129.206.210.127
Heidelberg/Baden-Wurttemberg/Germany (DE) - Universitaet Heidelberg


T  iwr1.iwr.uni-heidelberg.de
129.206.104.244
Heidelberg/Baden-Wurttemberg/Germany (DE) - Universitaet Heidelberg

uni-heidelberg.de
  dns.uni-heidelberg.de
129.206.100.126
Heidelberg/Baden-Wurttemberg/Germany (DE) - Universitaet Heidelberg


  dns1.belwue.de / dnsrep02.belwue.de
129.143.2.10
Oberwolfach/Baden-Wurttemberg/Germany (DE) - Universitaet Stuttgart


 
2001:7c0::53:10
Stuttgart/Baden-Wurttemberg/Germany (DE) - Universitaet Stuttgart


  dns2.uni-heidelberg.de
129.206.210.127
Heidelberg/Baden-Wurttemberg/Germany (DE) - Universitaet Heidelberg


  dns3.belwue.de / dnsrep02.belwue.de
129.143.253.133
Tübingen/Baden-Wurttemberg/Germany (DE) - Universitaet Stuttgart


 
2001:7c0:0:253::133
Stuttgart/Baden-Wurttemberg/Germany (DE) - Universitaet Stuttgart

de
  a.nic.de / ns-2.de.nl1.knot


  f.nic.de / ns-2.de.de1.knot


  l.de.net / ns-2.de.fr1.knot


  n.de.net / s3.amx


  s.de.net / ns-2.de.de9.knot


  z.nic.de / ns-1.de.de2.bind


4. SOA-Entries


Domain:de
Zone-Name:de
Primary:f.nic.de
Mail:dns-operations.denic.de
Serial:1715756617
Refresh:7200
Retry:7200
Expire:3600000
TTL:7200
num Entries:6


Domain:uni-heidelberg.de
Zone-Name:uni-heidelberg.de
Primary:dns.uni-heidelberg.de
Mail:net-bugs.urz.uni-heidelberg.de
Serial:202405060
Refresh:21600
Retry:1800
Expire:2419200
TTL:3600
num Entries:6


Domain:modellierungstag.uni-heidelberg.de
Zone-Name:
Primary:
Mail:
Serial:
Refresh:
Retry:
Expire:
TTL:
num Entries:1


Domain:modellierungstag.uni-heidelberg.de
Zone-Name:modellierungstag.uni-heidelberg.de
Primary:iwr1.iwr.uni-heidelberg.de
Mail:zd-admin.iwr.uni-heidelberg.de
Serial:202405131
Refresh:3600
Retry:600
Expire:2419200
TTL:86400
num Entries:2


5. Screenshots

Startaddress: https://www.mathcomp.uni-heidelberg.de/home, address used: https://www.mathcomp.uni-heidelberg.de/home, Screenshot created 2024-05-15 09:08:59 +00:0

Mobil (412px x 732px)

1117 milliseconds

Screenshot mobile - https://www.mathcomp.uni-heidelberg.de/home
Mobil + Landscape (732px x 412px)

1132 milliseconds

Screenshot mobile landscape - https://www.mathcomp.uni-heidelberg.de/home
Screen (1280px x 1680px)

1387 milliseconds

Screenshot Desktop - https://www.mathcomp.uni-heidelberg.de/home

Mobile- and other Chrome-Checks

widthheight
visual Viewport396732
content Size3962111

Good: No horizontal scrollbar. Content-size width = visual Viewport width.

6. Url-Checks


:

:
DomainnameHttp-StatusredirectSec.G
• http://modellierungstag.uni-heidelberg.de/
129.206.109.250
301
https://modellierungstag.uni-heidelberg.de/
Html is minified: 100.00 %
0.044
A
Date: Wed, 15 May 2024 07:06:45 GMT
Server: Apache/2.4.29, (Ubuntu)
Location: https://modellierungstag.uni-heidelberg.de/
Connection: close
Content-Length: 351
Content-Type: text/html; charset=iso-8859-1

• http://www.modellierungstag.uni-heidelberg.de/
129.206.109.250
301
https://www.modellierungstag.uni-heidelberg.de/
Html is minified: 100.00 %
0.040
A
Date: Wed, 15 May 2024 07:06:45 GMT
Server: Apache/2.4.29, (Ubuntu)
Location: https://www.modellierungstag.uni-heidelberg.de/
Connection: close
Content-Length: 359
Content-Type: text/html; charset=iso-8859-1

• https://modellierungstag.uni-heidelberg.de/
129.206.109.250
301
https://www.mathcomp.uni-heidelberg.de/
Html is minified: 100.00 %
2.336
B
Date: Wed, 15 May 2024 07:06:45 GMT
Server: Apache/2.4.29, (Ubuntu)
Location: https://www.mathcomp.uni-heidelberg.de/
Connection: close
Content-Length: 348
Content-Type: text/html; charset=iso-8859-1

• https://www.modellierungstag.uni-heidelberg.de/
129.206.109.250
301
https://www.mathcomp.uni-heidelberg.de/
Html is minified: 100.00 %
2.153
B
Date: Wed, 15 May 2024 07:06:49 GMT
Server: Apache/2.4.29, (Ubuntu)
Location: https://www.mathcomp.uni-heidelberg.de/
Connection: close
Content-Length: 352
Content-Type: text/html; charset=iso-8859-1

• https://www.mathcomp.uni-heidelberg.de/

307
https://www.mathcomp.uni-heidelberg.de/home
2.317
B
Date: Wed, 15 May 2024 07:06:55 GMT
Server: Apache/2.4.29, (Ubuntu)
Location: https://www.mathcomp.uni-heidelberg.de/home
Connection: close
Content-Length: 0
Content-Type: text/html; charset=UTF-8

• https://www.mathcomp.uni-heidelberg.de/home
GZip used - 6468 / 26027 - 75.15 %
Inline-JavaScript (∑/total): 2/0 Inline-CSS (∑/total): 0/0
200

Html is minified: 105.47 %
2.260
B
Date: Wed, 15 May 2024 07:07:05 GMT
Server: Apache/2.4.29, (Ubuntu)
Cache-Control: no-store, private
Vary: Accept-Encoding
Connection: close
Content-Language: en
Content-Encoding: gzip
Content-Length: 6468
Content-Type: text/html; charset=utf-8

• http://modellierungstag.uni-heidelberg.de/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
129.206.109.250
Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 0/0
301
https://modellierungstag.uni-heidelberg.de/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
Html is minified: 100.00 %
0.037
A
Visible Content:
Date: Wed, 15 May 2024 07:06:52 GMT
Server: Apache/2.4.29, (Ubuntu)
Location: https://modellierungstag.uni-heidelberg.de/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
Connection: close
Content-Length: 420
Content-Type: text/html; charset=iso-8859-1

• http://www.modellierungstag.uni-heidelberg.de/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
129.206.109.250
Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 0/0
301
https://www.modellierungstag.uni-heidelberg.de/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
Html is minified: 100.00 %
0.040
A
Visible Content:
Date: Wed, 15 May 2024 07:06:52 GMT
Server: Apache/2.4.29, (Ubuntu)
Location: https://www.modellierungstag.uni-heidelberg.de/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
Connection: close
Content-Length: 428
Content-Type: text/html; charset=iso-8859-1

• https://modellierungstag.uni-heidelberg.de/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de

Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 0/0
301
https://www.mathcomp.uni-heidelberg.de/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
Html is minified: 100.00 %
2.123
A
Visible Content:
Date: Wed, 15 May 2024 07:06:58 GMT
Server: Apache/2.4.29, (Ubuntu)
Location: https://www.mathcomp.uni-heidelberg.de/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
Connection: close
Content-Length: 417
Content-Type: text/html; charset=iso-8859-1

• https://www.modellierungstag.uni-heidelberg.de/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de

Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 0/0
301
https://www.mathcomp.uni-heidelberg.de/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
Html is minified: 100.00 %
2.130
A
Visible Content:
Date: Wed, 15 May 2024 07:07:02 GMT
Server: Apache/2.4.29, (Ubuntu)
Location: https://www.mathcomp.uni-heidelberg.de/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
Connection: close
Content-Length: 421
Content-Type: text/html; charset=iso-8859-1

• https://www.mathcomp.uni-heidelberg.de/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de

Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 0/0
404

Html is minified: 153.57 %
2.173
A
Not Found
Visible Content:
Date: Wed, 15 May 2024 07:07:08 GMT
Server: Apache/2.4.29, (Ubuntu)
Connection: close
Content-Length: 2368
Content-Type: text/html; charset=utf-8

• https://129.206.109.250/
129.206.109.250
301
https://www.mathcomp.uni-heidelberg.de/
Html is minified: 100.00 %
2.150
N
Certificate error: RemoteCertificateNameMismatch
Date: Wed, 15 May 2024 07:06:52 GMT
Server: Apache/2.4.29, (Ubuntu)
Location: https://www.mathcomp.uni-heidelberg.de/
Connection: close
Content-Length: 329
Content-Type: text/html; charset=iso-8859-1

7. Comments


1. General Results, most used to calculate the result

Aname "modellierungstag.uni-heidelberg.de" is subdomain, public suffix is ".de", top-level-domain is ".de", top-level-domain-type is "country-code", Country is Germany, tld-manager is "DENIC eG", num .de-domains preloaded: 9687 (complete: 244198)
AGood: All ip addresses are public addresses
Warning: Only one ip address found: modellierungstag.uni-heidelberg.de has only one ip address.
Warning: Only one ip address found: www.modellierungstag.uni-heidelberg.de has only one ip address.
Warning: No ipv6 address found. Ipv6 is the future with a lot of new features. So every domain name should have an ipv6 address. See https://en.wikipedia.org/wiki/IPv6: modellierungstag.uni-heidelberg.de has no ipv6 address.
Warning: No ipv6 address found. Ipv6 is the future with a lot of new features. So every domain name should have an ipv6 address. See https://en.wikipedia.org/wiki/IPv6: www.modellierungstag.uni-heidelberg.de has no ipv6 address.
AGood: No asked Authoritative Name Server had a timeout
Ahttps://www.mathcomp.uni-heidelberg.de/
307
https://www.mathcomp.uni-heidelberg.de/home
Correct redirect https to https
Ahttps://www.modellierungstag.uni-heidelberg.de/ 129.206.109.250
301
https://www.mathcomp.uni-heidelberg.de/
Correct redirect https to https
Ahttps://www.modellierungstag.uni-heidelberg.de/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
301
https://www.mathcomp.uni-heidelberg.de/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
Correct redirect https to https
AGood: destination is https
AGood - only one version with Http-Status 200
AGood: one preferred version: www is preferred
AGood: No cookie sent via http.
HSTS-Preload-Status: unknown. Domain never included in the Preload-list. Check https://hstspreload.org/ to learn some basics about the Google-Preload-List.
AGood: All urls with http status 200/404 have a complete Content-Type header (MediaType / MediaSubType + correct charset)
Ahttp://modellierungstag.uni-heidelberg.de/ 129.206.109.250
301
https://modellierungstag.uni-heidelberg.de/
Correct redirect http - https with the same domain name
Ahttp://www.modellierungstag.uni-heidelberg.de/ 129.206.109.250
301
https://www.modellierungstag.uni-heidelberg.de/
Correct redirect http - https with the same domain name
Bhttps://modellierungstag.uni-heidelberg.de/ 129.206.109.250
301

Missing HSTS-Header
Bhttps://www.mathcomp.uni-heidelberg.de/
307

Missing HSTS-Header
Bhttps://www.modellierungstag.uni-heidelberg.de/ 129.206.109.250
301

Missing HSTS-Header
Bhttps://www.mathcomp.uni-heidelberg.de/home
200

Missing HSTS-Header
Bhttps://modellierungstag.uni-heidelberg.de/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
301

Missing HSTS-Header
Bhttps://www.modellierungstag.uni-heidelberg.de/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
301

Missing HSTS-Header
Bhttps://www.mathcomp.uni-heidelberg.de/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
404

Missing HSTS-Header
Nhttps://129.206.109.250/ 129.206.109.250
301
https://www.mathcomp.uni-heidelberg.de/
Error - Certificate isn't trusted, RemoteCertificateNameMismatch
XFatal error: Nameserver doesn't support TCP connection: iwr1.iwr.uni-heidelberg.de / 129.206.104.244: Timeout
Info: Checking all ip addresses of that domain without sending the hostname only one certificate found. Checking all ip addresses and sending the hostname only one certificate found. Both certificates are the same. So that domain doesn't require Server Name Indication (SNI), it's the primary certificate of that set of ip addresses.: Domain modellierungstag.uni-heidelberg.de, 1 ip addresses, 1 different http results.
Info: Checking all ip addresses of that domain without sending the hostname only one certificate found. Checking all ip addresses and sending the hostname only one certificate found. Both certificates are the same. So that domain doesn't require Server Name Indication (SNI), it's the primary certificate of that set of ip addresses.: Domain www.modellierungstag.uni-heidelberg.de, 1 ip addresses, 1 different http results.
BNo _mta-sts TXT record found (mta-sts: Mail Transfer Agent Strict Transport Security - see RFC 8461). Read the result of server-daten.de (Url-Checks, Comments, Connections and DomainServiceRecords) to see a complete definition. Domainname: _mta-sts.modellierungstag.uni-heidelberg.de

2. Header-Checks

Fwww.mathcomp.uni-heidelberg.de
Content-Security-Policy
Critical: Missing Header:
Fwww.mathcomp.uni-heidelberg.de
X-Content-Type-Options
Critical: Missing Header:
Fwww.mathcomp.uni-heidelberg.de
Referrer-Policy
Critical: Missing Header:
Fwww.mathcomp.uni-heidelberg.de
Permissions-Policy
Critical: Missing Header:

3. DNS- and NameServer - Checks

AInfo:: 5 Root-climbing DNS Queries required to find all IPv4- and IPv6-Addresses of 3 Name Servers.
AInfo:: 5 Queries complete, 3 with IPv6, 2 with IPv4.
Warning: Only some DNS Queries done via ipv6. IPv6 is the future, so the name servers of your name servers should have ipv6 addresses.
AGood: Some ip addresses of name servers found with the minimum of two DNS Queries. One to find the TLD-Zone, one to ask the TLD-Zone.dns.uni-heidelberg.de (129.206.100.126), dns.uni-heidelberg.de (129.206.100.126), dns2.uni-heidelberg.de (129.206.210.127)
AGood (1 - 3.0):: An average of 1.7 queries per domain name server required to find all ip addresses of all name servers.
AInfo:: 3 different Name Servers found: dns.uni-heidelberg.de, dns2.uni-heidelberg.de, iwr1.iwr.uni-heidelberg.de, 3 Name Servers included in Delegation: dns.uni-heidelberg.de, dns2.uni-heidelberg.de, iwr1.iwr.uni-heidelberg.de, 3 Name Servers included in 2 Zone definitions: dns.uni-heidelberg.de, dns2.uni-heidelberg.de, iwr1.iwr.uni-heidelberg.de, 1 Name Servers listed in SOA.Primary: iwr1.iwr.uni-heidelberg.de.
AGood: Only one SOA.Primary Name Server found.: iwr1.iwr.uni-heidelberg.de.
AGood: SOA.Primary Name Server included in the delegation set.: iwr1.iwr.uni-heidelberg.de.
AGood: All Name Server Domain Names have a Public Suffix.
AGood: All Name Server Domain Names ending with a Public Suffix have minimal one IPv4- or IPv6 address.
AGood: All Name Server ip addresses are public.
AGood: Minimal 2 different name servers (public suffix and public ip address) found: 3 different Name Servers found
Warning: No Name Server IPv6 address found. IPv6 is the future, so your name servers should be visible via IPv6.: 3 different Name Servers found
Warning: All Name Servers have the same Top Level Domain / Public Suffix. If there is a problem with that Top Level Domain, your domain may be affected. Better: Use Name Servers with different top level domains.: 3 Name Servers, 1 Top Level Domain: de
Warning: All Name Servers have the same domain name. If there is a problem with that domain name (or with the name servers of that domain name), your domain may be affected. Better: Use Name Servers with different domain names / different top level domains.: Only one domain name used: uni-heidelberg.de
Warning: All Name Servers from the same Country / IP location.: 3 Name Servers, 1 Countries: DE
AInfo: Ipv4-Subnet-list: 3 Name Servers, 1 different subnets (first Byte): 129., 1 different subnets (first two Bytes): 129.206., 3 different subnets (first three Bytes): 129.206.100., 129.206.104., 129.206.210.
AGood: Name Server IPv4-addresses from different subnet found:
AInfo: Nameserver mit different domain names found. May be a problem with DNS-Updates
XNameserver Timeout checking Echo Capitalization: iwr1.iwr.uni-heidelberg.de / 129.206.104.244
XNameserver Timeout checking EDNS512: iwr1.iwr.uni-heidelberg.de / 129.206.104.244
Nameserver doesn't pass all EDNS-Checks: iwr1.iwr.uni-heidelberg.de / 129.206.104.244: OP100: fatal timeout. FLAGS: fatal timeout. V1: fatal timeout. V1OP100: fatal timeout. V1FLAGS: fatal timeout. DNSSEC: fatal timeout. V1DNSSEC: fatal timeout. NSID: fatal timeout. COOKIE: fatal timeout. CLIENTSUBNET: fatal timeout.
AGood: All SOA have the same Serial Number
Warning: No CAA entry with issue/issuewild found, every CAA can create a certificate. Read https://en.wikipedia.org/wiki/DNS_Certification_Authority_Authorization to learn some basics about the idea of CAA. Your name server must support such an entry. Not all dns providers support CAA entries.

4. Content- and Performance-critical Checks

AGood: All checks /.well-known/acme-challenge/random-filename without redirects answer with the expected http status 404 - Not Found. Creating a Letsencrypt certificate via http-01 challenge should work. If it doesn't work: Check your vHost configuration (apachectl -S, httpd -S, nginx -T). Every combination of port and ServerName / ServerAlias (Apache) or Server (Nginx) must be unique. Merge duplicated entries in one vHost. If you use an IIS, extensionless files must be allowed in the /.well-known/acme-challenge subdirectory. Create a web.config in that directory. Content: <configuration><system.webServer><staticContent><mimeMap fileExtension="." mimeType="text/plain" /></staticContent></system.webServer></configuration>. If you have a redirect http ⇒ https, that's ok, Letsencrypt follows such redirects to port 80 / 443 (same or other server). There must be a certificate. But the certificate may be expired, self signed or with a not matching domain name. Checking the validation file Letsencrypt ignores such certificate errors. Trouble creating a certificate? Use https://community.letsencrypt.org/ to ask.
AGood: Every https result with status 200 supports GZip.
https://www.mathcomp.uni-heidelberg.de/home
200

Warning: Https + http status 200 + Inline CSS / JavaScript found. Don't use inline CSS / JavaScript. These are compiled and re-used ressources, save these with a long Cache-Control max-age - header.
AGood: Every https result with status 200 has a minified Html-Content with a quota lower then 110 %.
https://www.mathcomp.uni-heidelberg.de/home
200

Warning: Https connections (Standard Port 443) found without support of the http/2 protocol via ALPN. Http/2 is the new Http-Version (old: http 1.1) with some important new features. Update your server software so http/2 is available. Only one TCP-connection per Server (that's a performance boost), Header-Compression and Server Pushs are available. Domain Sharding and Inline-CSS/Javascript shouldn't used with http/2.
https://www.mathcomp.uni-heidelberg.de/home
200

Critical: Some script Elements (type text/javascript) with a src-Attribute don't have a defer / async - Attribute. Loading and executing these JavaScripts blocks parsing and rendering the Html-Output. That's bad if your site is large or the connection is slow / mobile usage. Use "async" if the js file has only functions (so nothing is executed after parsing the file) or is independend. Use "defer" if the order of the scripts is important. All "defer" scripts are executed before the DOMContentLoaded event is fired. Check https://developer.mozilla.org/en-US/docs/Web/HTML/Element/script to see some details.: 2 script elements without defer/async.
AGood: All CSS / JavaScript files are sent with GZip. That reduces the content of the files. 6 external CSS / JavaScript files found
AGood: All images with internal compression not sent via GZip. Images (.png, .jpg) are already compressed, so an additional GZip isn't helpful. 1 images (type image/png, image/jpg) found without additional GZip. Not required because these images are already compressed
Warning: CSS / JavaScript files with a missing or too short Cache-Control header found. Browsers should cache and re-use these files. 6 external CSS / JavaScript files without Cache-Control-Header, 0 with Cache-Control, but no max-age, 0 with Cache-Control max-age too short (minimum 7 days), 0 with Cache-Control long enough, 6 complete.
Warning: Images with a missing or too short Cache-Control header found. Browsers should cache and re-use these files. 4 image files without Cache-Control-Header, 0 with Cache-Control, but no max-age, 0 with Cache-Control max-age too short (minimum 7 days), 0 with Cache-Control long enough, 4 complete.
AGood: All checked attribute values are enclosed in quotation marks (" or ').
AGood: Some img-elements have a valid alt-attribute.: 4 img-elements found, 3 img-elements with correct alt-attributes (defined, not an empty value).
Wrong: img-elements without alt-attribute or empty alt-attribute found. The alt-attribute ("alternative") is required and should describe the img. So Screenreader and search engines are able to use these informations.: 1 img-elements without alt-attribute, 0 img-elements with empty alt-attribute found.
AGood: Domainname is not on the "Specially Designated Nationals And Blocked Persons List" (SDN). That's an US-list of individuals and companies owned or controlled by, or acting for or on behalf of, targeted countries. It also lists individuals, groups, and entities, such as terrorists and narcotics traffickers designated under programs that are not country-specific. Collectively, such individuals and companies are called "Specially Designated Nationals" or "SDNs." Their assets are blocked and U.S. persons are generally prohibited from dealing with them. So if a domain name is on that list, it's impossible to create a Letsencrypt certificate with that domain name. Check the list manual - https://www.treasury.gov/resource-center/sanctions/sdn-list/pages/default.aspx
https://www.mathcomp.uni-heidelberg.de/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
404
2.173 seconds
Warning: 404 needs more then one second
ADuration: 237944 milliseconds, 237.944 seconds


8. Connections

DomainIPPortCert.ProtocolKeyExchangeStrengthCipherStrengthHashAlgorithmOCSP stapling
Domain/KeyExchangeIP/StrengthPort/CipherCert./StrengthProtocol/HashAlgorithmOCSP stapling
www.mathcomp.uni-heidelberg.de
www.mathcomp.uni-heidelberg.de
443
ok
Tls12
ECDH Ephermal
255
Aes256
256
Sha384
not supported
ok
www.mathcomp.uni-heidelberg.de
www.mathcomp.uni-heidelberg.de
443
ok
Tls12

ECDH Ephermal
255
Aes256
256
Sha384
not supported
ok
no http/2 via ALPN 
Tls.1.2
no Tls.1.1
no Tls.1.0
no Ssl3
no Ssl2
no http/2 via ALPN
Tls.1.2
no Tls.1.1
no Tls.1.0
no Ssl3
no Ssl2
Chain (complete)
1CN=mathcomp.uni-heidelberg.de

2CN=R3, O=Let's Encrypt, C=US


modellierungstag.uni-heidelberg.de
129.206.109.250
443
ok
Tls12
ECDH Ephermal
255
Aes256
256
Sha384
not supported
ok

modellierungstag.uni-heidelberg.de
129.206.109.250
443
ok
Tls12

ECDH Ephermal
255
Aes256
256
Sha384
not supported
ok
no http/2 via ALPN 
No SNI required - domain included in main certificate
Tls.1.2
no Tls.1.1
no Tls.1.0
no Ssl3
no Ssl2
no http/2 via ALPN
No SNI required - domain included in main certificate
Tls.1.2
no Tls.1.1
no Tls.1.0
no Ssl3
no Ssl2
Chain (complete)
1CN=mathcomp.uni-heidelberg.de

2CN=R3, O=Let's Encrypt, C=US


www.modellierungstag.uni-heidelberg.de
129.206.109.250
443
ok
Tls12
ECDH Ephermal
255
Aes256
256
Sha384
not supported
ok

www.modellierungstag.uni-heidelberg.de
129.206.109.250
443
ok
Tls12

ECDH Ephermal
255
Aes256
256
Sha384
not supported
ok
no http/2 via ALPN 
No SNI required - domain included in main certificate
Tls.1.2
no Tls.1.1
no Tls.1.0
no Ssl3
no Ssl2
no http/2 via ALPN
No SNI required - domain included in main certificate
Tls.1.2
no Tls.1.1
no Tls.1.0
no Ssl3
no Ssl2
Chain (complete)
1CN=mathcomp.uni-heidelberg.de

2CN=R3, O=Let's Encrypt, C=US


modellierungstag.uni-heidelberg.de
modellierungstag.uni-heidelberg.de
443
ok
Tls12
ECDH Ephermal
255
Aes256
256
Sha384
not supported
ok

modellierungstag.uni-heidelberg.de
modellierungstag.uni-heidelberg.de
443
ok
Tls12

ECDH Ephermal
255
Aes256
256
Sha384
not supported
ok
no http/2 via ALPN 
Tls.1.2
no Tls.1.1
no Tls.1.0
no Ssl3
no Ssl2
no http/2 via ALPN
Tls.1.2
no Tls.1.1
no Tls.1.0
no Ssl3
no Ssl2
Chain (complete)
1CN=mathcomp.uni-heidelberg.de

2CN=R3, O=Let's Encrypt, C=US


www.modellierungstag.uni-heidelberg.de
www.modellierungstag.uni-heidelberg.de
443
ok
Tls12
ECDH Ephermal
255
Aes256
256
Sha384
not supported
ok

www.modellierungstag.uni-heidelberg.de
www.modellierungstag.uni-heidelberg.de
443
ok
Tls12

ECDH Ephermal
255
Aes256
256
Sha384
not supported
ok
no http/2 via ALPN 
Tls.1.2
no Tls.1.1
no Tls.1.0
no Ssl3
no Ssl2
no http/2 via ALPN
Tls.1.2
no Tls.1.1
no Tls.1.0
no Ssl3
no Ssl2
Chain (complete)
1CN=mathcomp.uni-heidelberg.de

2CN=R3, O=Let's Encrypt, C=US


129.206.109.250
129.206.109.250
443
name does not match
Tls12
ECDH Ephermal
255
Aes256
256
Sha384
not supported
ok

129.206.109.250
129.206.109.250
443
name does not match
Tls12

ECDH Ephermal
255
Aes256
256
Sha384
not supported
ok
no http/2 via ALPN 
Cert sent without SNI
Tls.1.2
no Tls.1.1
no Tls.1.0
no Ssl3
no Ssl2
no http/2 via ALPN
Cert sent without SNI
Tls.1.2
no Tls.1.1
no Tls.1.0
no Ssl3
no Ssl2
Chain (complete)
1CN=mathcomp.uni-heidelberg.de

2CN=R3, O=Let's Encrypt, C=US


9. Certificates

1.
1.
CN=mathcomp.uni-heidelberg.de
15.05.2024
13.08.2024
expires in 79 days
mathcomp.uni-heidelberg.de, modellierungstag.uni-heidelberg.de, www.mathcomp.uni-heidelberg.de, www.modellierungstag.uni-heidelberg.de - 4 entries
1.
1.
CN=mathcomp.uni-heidelberg.de
15.05.2024

13.08.2024
expires in 79 days
mathcomp.uni-heidelberg.de, modellierungstag.uni-heidelberg.de, www.mathcomp.uni-heidelberg.de, www.modellierungstag.uni-heidelberg.de - 4 entries

KeyalgorithmEC Public Key (256 bit, prime256v1)
Signatur:SHA256 With RSA-Encryption
Serial Number:048F71DACC5AE644ABDB6DC0E8167BDD6863
Thumbprint:F1D145B016EBD8C3303C99E398738058BE92D39A
SHA256 / Certificate:5D70OnvdWx6GmtCdHAsPyUscovIMgjB0wH/vo9p0JOg=
SHA256 hex / Cert (DANE * 0 1):e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA256 hex / PublicKey (DANE * 1 1):ccba33df14a8b7e945a0d9466684fe26f9ef1d695ce489ed048f61d67238a051
SHA256 hex / Subject Public Key Information (SPKI):ccba33df14a8b7e945a0d9466684fe26f9ef1d695ce489ed048f61d67238a051 (is buggy, ignore the result)
SPKI checked via https://v1.pwnedkeys.com/spki-hash:Good: Key isn't compromised
OCSP - Url:http://r3.o.lencr.org
OCSP - must staple:no
Certificate Transparency:yes
Enhanced Key Usage:Serverauthentifizierung (1.3.6.1.5.5.7.3.1), Clientauthentifizierung (1.3.6.1.5.5.7.3.2)


2.
CN=R3, O=Let's Encrypt, C=US
04.09.2020
15.09.2025
expires in 477 days


2.
CN=R3, O=Let's Encrypt, C=US
04.09.2020

15.09.2025
expires in 477 days


KeyalgorithmRSA encryption (2048 bit)
Signatur:SHA256 With RSA-Encryption
Serial Number:00912B084ACF0C18A753F6D62E25A75F5A
Thumbprint:A053375BFE84E8B748782C7CEE15827A6AF5A405
SHA256 / Certificate:Z63RFmsCCuYbj1/JaBPATCqliZYHloZVcqPH5zdhPf0=
SHA256 hex / Cert (DANE * 0 1):e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA256 hex / PublicKey (DANE * 1 1):8d02536c887482bc34ff54e41d2ba659bf85b341a0a20afadb5813dcfbcf286d
SHA256 hex / Subject Public Key Information (SPKI):8d02536c887482bc34ff54e41d2ba659bf85b341a0a20afadb5813dcfbcf286d
SPKI checked via https://v1.pwnedkeys.com/spki-hash:Check unknown. No result 404 / 200
OCSP - Url:
OCSP - must staple:no
Certificate Transparency:no
Enhanced Key Usage:Clientauthentifizierung (1.3.6.1.5.5.7.3.2), Serverauthentifizierung (1.3.6.1.5.5.7.3.1)


3.
CN=ISRG Root X1, O=Internet Security Research Group, C=US
04.06.2015
04.06.2035
expires in 4026 days


3.
CN=ISRG Root X1, O=Internet Security Research Group, C=US
04.06.2015

04.06.2035
expires in 4026 days


KeyalgorithmRSA encryption (4096 bit)
Signatur:SHA256 With RSA-Encryption
Serial Number:008210CFB0D240E3594463E0BB63828B00
Thumbprint:CABD2A79A1076A31F21D253635CB039D4329A5E8
SHA256 / Certificate:lrzsBiZJdvN0YHeazyjFp8/oo8Cq4RqP/O4FwL3fCMY=
SHA256 hex / Cert (DANE * 0 1):96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
SHA256 hex / PublicKey (DANE * 1 1):0b9fa5a59eed715c26c1020c711b4f6ec42d58b0015e14337a39dad301c5afc3
SHA256 hex / Subject Public Key Information (SPKI):0b9fa5a59eed715c26c1020c711b4f6ec42d58b0015e14337a39dad301c5afc3
SPKI checked via https://v1.pwnedkeys.com/spki-hash:Good: Key isn't compromised
OCSP - Url:
OCSP - must staple:no
Certificate Transparency:no
Enhanced Key Usage:



10. Last Certificates - Certificate Transparency Log Check

1. Source CertSpotter - active certificates (one check per day)

Issuerlast 7 daysactivenum Certs
CN=R3, O=Let's Encrypt, C=US
0
3
3

CertSpotter-IdIssuernot beforenot afterDomain namesLE-Duplicatenext LE
7319293531
leaf cert
CN=R3, O=Let's Encrypt, C=US
2024-05-15 06:01:19
2024-08-13 06:01:18
modellierungstag.uni-heidelberg.de, www.modellierungstag.uni-heidelberg.de - 2 entries


7319221537
leaf cert
CN=R3, O=Let's Encrypt, C=US
2024-05-15 05:41:31
2024-08-13 05:41:30
mathcomp.uni-heidelberg.de, modellierungstag.uni-heidelberg.de, www.mathcomp.uni-heidelberg.de, www.modellierungstag.uni-heidelberg.de - 4 entries


7313148280
leaf cert
CN=R3, O=Let's Encrypt, C=US
2024-05-14 07:07:07
2024-08-12 07:07:06
modellierungstag.uni-heidelberg.de, www.modellierungstag.uni-heidelberg.de - 2 entries



2. Source crt.sh - old and new certificates, sometimes very slow - only certificates with "not after" > of the last months are listed

Issuerlast 7 daysactivenum Certs
CN=R3, O=Let's Encrypt, C=US
0 /0 new
1
1

CRT-IdIssuernot beforenot afterDomain namesLE-Duplicatenext LE
13049519706
leaf cert
CN=R3, O=Let's Encrypt, C=US
2024-05-14 05:07:07
2024-08-12 05:07:06
modellierungstag.uni-heidelberg.de, www.modellierungstag.uni-heidelberg.de
2 entries



11. Html-Content - Entries

Summary

Subresource Integrity (SRI)
DomainnameHtmlElementrel/property∑ size∑ problems∑ int.∑ ext.∑ Origin poss.∑ SRI ParseErrors∑ SRI valid∑ SRI missing
https://www.mathcomp.uni-heidelberg.de/home
a

48

0


0
0
0


img

2
110,538 Bytes
0
2
0
0
0
0


link
stylesheet
3
54,581 Bytes
0
3
0
0
0
0


link
other
2
1,150 Bytes
0
1
0
0
0
0


meta
apple
1

0


0
0
0


meta
twitter
1

0


0
0
0


meta
other
7

0


0
0
0


picture

1

0


0
0
0


script

2
3,322 Bytes
0
2
0
0
0
0

Details

DomainnameHtml-Elementname/equiv/ property/relhref/src/contentHttpStatusmsgStatus
https://www.mathcomp.uni-heidelberg.de/home

a




5
ok








a

#event_element_921


1
ok








a

#event_element_928


1
ok








a

#event_element_930


1
ok








a

#page-content


1
ok








a

#top


1
ok








a

/about-us/chair-executive-board


1
ok








a

/about-us/contact


1
ok








a

/about-us/glossary


1
ok








a

/about-us/team-fellow-speakers


1
ok








a

/about-us/what-we-do


1
ok








a

/calendar-events/calendar


2
ok








a

/calendar-events/past-events


1
ok








a

/calendar-events/training-program


1
ok








a

/home


2
ok








a

/membership/member-list


1
ok








a

/membership/membership-explained


1
ok








a

/membership/opportunities


1
ok








a

/programs/4eu-european-university-alliance


1
ok








a

/programs/lecture-series


1
ok








a

/programs/mathematics-of-life


1
ok








a

/programs/romberg-program


1
ok








a

/programs/upstream


1
ok








a

https://forms.office.com/pages/responsepage.aspx?id=DQSIkWdsW0yxEjajBLZtrQAAAAAAAAAAAAYAAJg6aOxUNlNXNTBIQUQwMU9HT1RFRjRTRVlZQVFaVi4u


1
ok








a

https://mastersc.iwr.uni-heidelberg.de


1
ok








a

https://terminplaner6.dfn.de/b/435364f6e9cd0b940a1b9acd441b8c22-660214


1
ok








a

https://terminplaner6.dfn.de/b/6deb42436272aff021504bb993dfcd0d-660217


1
ok








a

https://www.iwr.uni-heidelberg.de


1
ok








a

https://www.iwr.uni-heidelberg.de/events/after-research-party-2024


1
ok








a

https://www.ssc.uni-heidelberg.de


2
ok








a

https://www.ssc.uni-heidelberg.de/de/node/361


2
ok








a

https://www.ssc.uni-heidelberg.de/de/node/55


2
ok








a

https://www.ssc.uni-heidelberg.de/en/compact-course-expert-git


1
ok








a

https://www.ssc.uni-heidelberg.de/en/compact-course-intermediate-git


1
ok








a

https://www.ssc.uni-heidelberg.de/en/what-the-scientific-software-center-is-all-about/meet-our-team


2
ok








a

https://www.uni-heidelberg.de/


1
ok








a

https://www.uni-heidelberg.de/datenschutzerklaerung_web.html


1
ok








a

https://www.uni-heidelberg.de/impressum.html


1
ok








img
src
/fileadmin/templates/images/HGS_Uni_Logo_2018.2.png
200

1
ok
alt: HGS Mathcompimage/png, missing X-Content-Type-Options nosniff

No Cache-Control header
No GZip - 106754 Bytes






img
src
/typo3conf/ext/bootstrap_package/Resources/Public/Images/BootstrapPackageInverted.svg
200

1
ok
alt: HGS Mathcompimage/svg+xml, missing X-Content-Type-Options nosniff

No Cache-Control header
No GZip - 3784 Bytes






link
canonical
https://www.mathcomp.uni-heidelberg.de/home


1
ok








link
shortcut icon
/typo3conf/ext/bootstrap_package/Resources/Public/Icons/favicon.ico
200

1
ok
image/vnd.microsoft.icon, missing X-Content-Type-Options nosniff

No Cache-Control header
No GZip - 1150 Bytes






link
stylesheet
/typo3temp/assets/bootstrappackage/fonts/284ba9c5345a729d38fc3d3bb72eea6caaef6180abbc77928e15e42297d05f8b/webfont.css?1715705596
200

1
ok
text/css, missing X-Content-Type-Options nosniff

No Cache-Control - header
GZip: 701/6626 Bytes




local SRI possible, possible hash-values:

sha256-zAU7csGs3URnLJ4neoxgy+l1BnBZ+2wYfwDDYODZrhM=
sha384-hPHcLip9ZPfZq+yxb5CQjVp5XP+OEVwvHBls/1C2Lm+rJ7eaI3yU23EJCm0vvVNP
sha512-xhe3OQyZZU6csbksQ/6pG0SvQA5bKQWogxSeZuV0KOXpPTw9jd2P2NDaeYKgrlaWD56z3k+R5NWSR+7sLyzl3A==

<link rel="stylesheet" href="/typo3temp/assets/bootstrappackage/fonts/284ba9c5345a729d38fc3d3bb72eea6caaef6180abbc77928e15e42297d05f8b/webfont.css?1715705596" crossorigin="anonymous" integrity="sha256-zAU7csGs3URnLJ4neoxgy+l1BnBZ+2wYfwDDYODZrhM=" />



Content loaded via url("...")

6xK3dSBYKcSV-LCoeQqfX1RYOo3qN67lqDY.woff21
6xK3dSBYKcSV-LCoeQqfX1RYOo3qNa7lqDY.woff21
6xK3dSBYKcSV-LCoeQqfX1RYOo3qNK7lqDY.woff21
6xK3dSBYKcSV-LCoeQqfX1RYOo3qNq7lqDY.woff21
6xK3dSBYKcSV-LCoeQqfX1RYOo3qO67lqDY.woff21
6xK3dSBYKcSV-LCoeQqfX1RYOo3qOK7l.woff21
6xK3dSBYKcSV-LCoeQqfX1RYOo3qPK7lqDY.woff21
6xKydSBYKcSV-LCoeQqfX1RYOo3ig4vwkxduz8A.woff21
6xKydSBYKcSV-LCoeQqfX1RYOo3ig4vwlBduz8A.woff21
6xKydSBYKcSV-LCoeQqfX1RYOo3ig4vwlxdu.woff21
6xKydSBYKcSV-LCoeQqfX1RYOo3ig4vwmBduz8A.woff21
6xKydSBYKcSV-LCoeQqfX1RYOo3ig4vwmhduz8A.woff21
6xKydSBYKcSV-LCoeQqfX1RYOo3ig4vwmRduz8A.woff21
6xKydSBYKcSV-LCoeQqfX1RYOo3ig4vwmxduz8A.woff21
6xKydSBYKcSV-LCoeQqfX1RYOo3ik4zwkxduz8A.woff21
6xKydSBYKcSV-LCoeQqfX1RYOo3ik4zwlBduz8A.woff21
6xKydSBYKcSV-LCoeQqfX1RYOo3ik4zwlxdu.woff21
6xKydSBYKcSV-LCoeQqfX1RYOo3ik4zwmBduz8A.woff21
6xKydSBYKcSV-LCoeQqfX1RYOo3ik4zwmhduz8A.woff21
6xKydSBYKcSV-LCoeQqfX1RYOo3ik4zwmRduz8A.woff21
6xKydSBYKcSV-LCoeQqfX1RYOo3ik4zwmxduz8A.woff21

link
stylesheet
/typo3temp/assets/compressed/merged-03ef166296b2c170a1a18e0f71d273a7-6e293efb7bd6015412b51f3a996437a6.css?1666081051
200

1
ok
text/css, missing X-Content-Type-Options nosniff

No Cache-Control - header
GZip: 480/1749 Bytes




local SRI possible, possible hash-values:

sha256-Xd1Pa/lnEBFJjCS00CwoSfIO/F5YYiuG2+oGyayHo5s=
sha384-35x+0+PwLRa21V2niiOvGD0CPERfFuOyQgeWYskT0ucGN/YDvXcM7DRG/JefwXoi
sha512-Gj6f+nZ8udg7nsES0iB3SitjgmXlqR8h9GvMt98OWs3UoLkBmcqpMvkgXB+UhVcCrkjLdzJLFjoZwUcLLOdZ9Q==

<link rel="stylesheet" href="/typo3temp/assets/compressed/merged-03ef166296b2c170a1a18e0f71d273a7-6e293efb7bd6015412b51f3a996437a6.css?1666081051" crossorigin="anonymous" integrity="sha256-Xd1Pa/lnEBFJjCS00CwoSfIO/F5YYiuG2+oGyayHo5s=" />



Content loaded via url("...")

../../../typo3conf/ext/bootstrap_package/Resources/Public/Fonts/./bootstrappackageicon.eot?d97e585912a7b078b7fbc39f8bd34e21#iefix1
../../../typo3conf/ext/bootstrap_package/Resources/Public/Fonts/./bootstrappackageicon.ttf?d97e585912a7b078b7fbc39f8bd34e211
../../../typo3conf/ext/bootstrap_package/Resources/Public/Fonts/./bootstrappackageicon.woff?d97e585912a7b078b7fbc39f8bd34e211
../../../typo3conf/ext/bootstrap_package/Resources/Public/Fonts/./bootstrappackageicon.woff2?d97e585912a7b078b7fbc39f8bd34e211

link
stylesheet
/typo3temp/assets/compressed/merged-26651285d820da38c266ff6867d9c9b2-57eabe423a65efa7d9130abae49e11c6.css?1702389250
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meta

utf-8


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meta
x-ua-compatible
IE=edge


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meta
apple-mobile-web-app-capable
no


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meta
description
The HGS MathComp at Heidelberg University is one of the leading graduate schools in Germany focusing on the complex topic of Scientific Computing.


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meta
generator
TYPO3 CMS


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meta
google
notranslate


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meta
robots
index,follow


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meta
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summary


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meta
viewport
width=device-width, initial-scale=1, minimum-scale=1


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picture


• source
media: (min-width: 1400px)



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• img




/fileadmin/_processed_/c/2/csm_HGS-MathComp_Header_4584x1262_1_92a52cdf0d.jpg
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script
src
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200

1
ok
Missing defer / async attribute. application/javascript, missing X-Content-Type-Options nosniff

No Cache-Control - header
GZip: 76343/246184 Bytes




local SRI possible, possible hash-values:

sha256-XtNlvtkDEq1FIy/XP/nzQJFmwunLH11KyiRPKlTqfGE=
sha384-6UoI2868Fhb5DIL0X8XHXeLLzFsvhEBR5c47RToytF1dMONH8VVKN8iBzImrzJmA
sha512-GhsvZ5KOkYi4zyBwneR12NKiOKp36cmne57lBy0sxaBd1kn4AdV2HYWHEbj8z6UeCJLjwxUmM7CP8tRSA8euog==

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script
src
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200

1
ok
Missing defer / async attribute. application/javascript, missing X-Content-Type-Options nosniff

No Cache-Control - header
GZip: 3322/7530 Bytes




local SRI possible, possible hash-values:

sha256-5mcn3BHqMpM1AaKDrz7uGYy+1VYuYPiMnIyqfY63mFI=
sha384-dI6CicugbL7TxzO8D4+IbrDdJmxMOoNqMrNBzIXrYpIzjKkWHyuhlajoolZ+NMCC
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12. Nameserver - IP-Adresses

Required Root-climbing DNS-Queries to find ip addresses of all Name Servers: dns.uni-heidelberg.de, dns2.uni-heidelberg.de, iwr1.iwr.uni-heidelberg.de

QNr.DomainTypeNS used
1
de
NS
l.root-servers.net (2001:500:9f::42)

Answer: a.nic.de, f.nic.de, l.de.net, n.de.net, s.de.net, z.nic.de
2
dns.uni-heidelberg.de: 129.206.100.126
NS
a.nic.de (2001:678:2::53)

Answer: dns3.belwue.de
129.143.253.133, 2001:7c0:0:253::133

Answer: dns2.uni-heidelberg.de
129.206.210.127

Answer: dns1.belwue.de
129.143.2.10, 2001:7c0::53:10
3
iwr1.iwr.uni-heidelberg.de
NS
a.nic.de (2001:678:2::53)

Answer: dns.uni-heidelberg.de, dns1.belwue.de, dns2.uni-heidelberg.de, dns3.belwue.de

Answer: dns3.belwue.de
129.143.253.133, 2001:7c0:0:253::133

Answer: dns2.uni-heidelberg.de
129.206.210.127

Answer: dns1.belwue.de
129.143.2.10, 2001:7c0::53:10

Answer: dns.uni-heidelberg.de
129.206.100.126
4
iwr1.iwr.uni-heidelberg.de: 129.206.104.244
A
dns.uni-heidelberg.de (129.206.100.126)
5
iwr1.iwr.uni-heidelberg.de: No AAAA record found
AAAA
dns.uni-heidelberg.de (129.206.100.126)


13. CAA - Entries

DomainnameflagNameValue∑ Queries∑ Timeout
www.modellierungstag.uni-heidelberg.de



1
0
modellierungstag.uni-heidelberg.de
0

no CAA entry found
1
0
uni-heidelberg.de
0

no CAA entry found
1
0
de
0

no CAA entry found
1
0


14. TXT - Entries

DomainnameTXT EntryStatus∑ Queries∑ Timeout
uni-heidelberg.de
1 baa827de-94e8-11d1-9294-0006292e8152 Readonly /.../uni-heidelberg.de/dcesrv2_ch 13228860-ad1b-11d1-9b86-0006292e7ae1 dcesrv2.urz.uni-heidelberg.de
ok
1
0
uni-heidelberg.de
cisco-ci-domain-verification=30f96646ddb8814399410d5700143249881b4eb5948ddcc31e894591877b7f84
ok
1
0
uni-heidelberg.de
cloudflare-verify.uni-heidelberg.de 392311672-383734000
ok
1
0
uni-heidelberg.de
google-site-verification=HZuDm00bKKT2fU_i2mLun2aw8IUNa64kg9ilP3b8-AQ
ok
1
0
modellierungstag.uni-heidelberg.de

ok
1
0
www.modellierungstag.uni-heidelberg.de


1
0
_acme-challenge.modellierungstag.uni-heidelberg.de

Name Error - The domain name does not exist
1
0
_acme-challenge.www.modellierungstag.uni-heidelberg.de

Name Error - The domain name does not exist
1
0
_acme-challenge.modellierungstag.uni-heidelberg.de.uni-heidelberg.de

Name Error - The domain name does not exist
1
0
_acme-challenge.modellierungstag.uni-heidelberg.de.modellierungstag.uni-heidelberg.de

Name Error - The domain name does not exist
1
0
_acme-challenge.www.modellierungstag.uni-heidelberg.de.modellierungstag.uni-heidelberg.de

Name Error - The domain name does not exist
1
0
_acme-challenge.www.modellierungstag.uni-heidelberg.de.www.modellierungstag.uni-heidelberg.de

Name Error - The domain name does not exist
1
0


15. DomainService - Entries

No DomainServiceEntries entries found



16. Cipher Suites

DomainIPPortCipher (OpenSsl / IANA)
modellierungstag.uni-heidelberg.de
129.206.109.250
443
ECDHE-ECDSA-CHACHA20-POLY1305
(Recommended)
TLSv1.2
0xCC,0xA9
FS
3 Ciphers, 30.36 sec
TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256
ECDH
ECDSA
CHACHA20/POLY1305(256)
AEAD



ECDHE-ECDSA-AES256-GCM-SHA384
(Recommended)
TLSv1.2
0xC0,0x2C
FS

TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
ECDH
ECDSA
AESGCM(256)
AEAD



ECDHE-ECDSA-AES128-GCM-SHA256
(Recommended)
TLSv1.2
0xC0,0x2B
FS

TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
ECDH
ECDSA
AESGCM(128)
AEAD
www.modellierungstag.uni-heidelberg.de
129.206.109.250
443
ECDHE-ECDSA-CHACHA20-POLY1305
(Recommended)
TLSv1.2
0xCC,0xA9
FS
3 Ciphers, 28.88 sec
TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256
ECDH
ECDSA
CHACHA20/POLY1305(256)
AEAD



ECDHE-ECDSA-AES256-GCM-SHA384
(Recommended)
TLSv1.2
0xC0,0x2C
FS

TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
ECDH
ECDSA
AESGCM(256)
AEAD



ECDHE-ECDSA-AES128-GCM-SHA256
(Recommended)
TLSv1.2
0xC0,0x2B
FS

TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
ECDH
ECDSA
AESGCM(128)
AEAD


17. Portchecks

No open Ports <> 80 / 443 found, so no additional Ports checked.



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