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




X

DNS-problem - authoritative Nameserver refused, not defined or timeout

Checked:
10.07.2024 07:52:32


Older results

No older results found


1. IP-Addresses

HostTypeIP-Addressis auth.∑ Queries∑ Timeout
iotool.nchu.edu.tw
A
140.120.1.145
Taichung/Taichung City/Taiwan (TW) - National Chung Hsing University
No Hostname found
yes
1
0

AAAA

yes


www.iotool.nchu.edu.tw

Name Error
yes
1
0
*.nchu.edu.tw
A
Name Error
yes



AAAA
Name Error
yes



CNAME
Name Error
yes


*.iotool.nchu.edu.tw
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



3 DNSKEY RR found



Public Key with Algorithm 8, KeyTag 5613, Flags 256



Public Key with Algorithm 8, KeyTag 20038, 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: 22.07.2024, 00:00:00 +, Signature-Inception: 01.07.2024, 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: tw
tw
1 DS RR in the parent zone found



DS with Algorithm 8, KeyTag 51277, DigestType 2 and Digest Ri2pr1AdKx7vZyVSLbWXL4zSSQtR2SCI/x49LeDse80=



1 RRSIG RR to validate DS RR found



RRSIG-Owner tw., Algorithm: 8, 1 Labels, original TTL: 86400 sec, Signature-expiration: 23.07.2024, 05:00:00 +, Signature-Inception: 10.07.2024, 04:00:00 +, KeyTag 20038, Signer-Name: (root)



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 20038 used to validate the DS RRSet in the parent zone



2 DNSKEY RR found



Public Key with Algorithm 8, KeyTag 2421, Flags 256



Public Key with Algorithm 8, KeyTag 51277, Flags 257 (SEP = Secure Entry Point)



2 RRSIG RR to validate DNSKEY RR found



RRSIG-Owner tw., Algorithm: 8, 1 Labels, original TTL: 900 sec, Signature-expiration: 09.08.2024, 02:00:21 +, Signature-Inception: 10.07.2024, 02:00:21 +, KeyTag 2421, Signer-Name: tw



RRSIG-Owner tw., Algorithm: 8, 1 Labels, original TTL: 900 sec, Signature-expiration: 09.08.2024, 02:00:21 +, Signature-Inception: 10.07.2024, 02:00:21 +, KeyTag 51277, Signer-Name: tw



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 2421 used to validate the DNSKEY RRSet



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 51277 used to validate the DNSKEY RRSet



Status: Valid Chain of trust. Parent-DS with Algorithm 8, KeyTag 51277, DigestType 2 and Digest "Ri2pr1AdKx7vZyVSLbWXL4zSSQtR2SCI/x49LeDse80=" validates local Key with the same values, Key ist Secure Entry Point (SEP) of the zone

Zone: edu.tw
edu.tw
1 DS RR in the parent zone found



DS with Algorithm 8, KeyTag 24025, DigestType 2 and Digest ff4dJ5OwkFZTpFejuRbV9bzRvISv7rNtqqyFXRWx6Ec=



1 RRSIG RR to validate DS RR found



RRSIG-Owner edu.tw., Algorithm: 8, 2 Labels, original TTL: 300 sec, Signature-expiration: 09.08.2024, 02:00:21 +, Signature-Inception: 10.07.2024, 02:00:21 +, KeyTag 2421, Signer-Name: tw



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 2421 used to validate the DS RRSet in the parent zone



4 DNSKEY RR found



Public Key with Algorithm 8, KeyTag 12423, Flags 256



Public Key with Algorithm 8, KeyTag 24025, Flags 257 (SEP = Secure Entry Point)



Public Key with Algorithm 8, KeyTag 34914, Flags 256



Public Key with Algorithm 8, KeyTag 53820, Flags 256



2 RRSIG RR to validate DNSKEY RR found



RRSIG-Owner edu.tw., Algorithm: 8, 2 Labels, original TTL: 172800 sec, Signature-expiration: 13.07.2024, 15:13:54 +, Signature-Inception: 09.07.2024, 14:41:44 +, KeyTag 12423, Signer-Name: edu.tw



RRSIG-Owner edu.tw., Algorithm: 8, 2 Labels, original TTL: 172800 sec, Signature-expiration: 13.07.2024, 15:13:54 +, Signature-Inception: 09.07.2024, 14:41:44 +, KeyTag 24025, Signer-Name: edu.tw



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 12423 used to validate the DNSKEY RRSet



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 24025 used to validate the DNSKEY RRSet



Status: Valid Chain of trust. Parent-DS with Algorithm 8, KeyTag 24025, DigestType 2 and Digest "ff4dJ5OwkFZTpFejuRbV9bzRvISv7rNtqqyFXRWx6Ec=" validates local Key with the same values, Key ist Secure Entry Point (SEP) of the zone

Zone: nchu.edu.tw
nchu.edu.tw
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 "curafgu8c1qofpv7a7kvkmu3qp77bnf5" between the hashed NSEC3-owner "curafgu8c1qofpv7a7kvkmu3qp77bnf5" and the hashed NextOwner "d0c3l7i472pkdv9a9p5d1ovktf00er80". So the parent zone confirmes the not-existence of a DS RR.
Bitmap: No Bitmap? Validated: RRSIG-Owner curafgu8c1qofpv7a7kvkmu3qp77bnf5.edu.tw., Algorithm: 8, 3 Labels, original TTL: 300 sec, Signature-expiration: 13.07.2024, 16:42:55 +, Signature-Inception: 09.07.2024, 16:12:08 +, KeyTag 12423, Signer-Name: edu.tw



0 DNSKEY RR found




Zone: iotool.nchu.edu.tw
iotool.nchu.edu.tw
0 DS RR in the parent zone found



0 DNSKEY RR found




Zone: www.iotool.nchu.edu.tw
www.iotool.nchu.edu.tw
0 DS RR in the parent zone found


3. Name Servers

DomainNameserverNS-IP
www.iotool.nchu.edu.tw
  nchud1.nchu.edu.tw

iotool.nchu.edu.tw
  nchud1.nchu.edu.tw
140.120.1.2
Taichung/Taichung City/Taiwan (TW) - National Chung Hsing University

nchu.edu.tw
  nchud1.nchu.edu.tw
140.120.1.2
Taichung/Taichung City/Taiwan (TW) - National Chung Hsing University


  pds.nchu.edu.tw
140.120.1.21
Taichung/Taichung City/Taiwan (TW) - National Chung Hsing University

edu.tw
T  a.twnic.net.tw
130.211.241.105
Taipei/Taiwan/Taiwan (TW) - Google LLC


 
211.73.64.22
Yingge District/Taipei/Taiwan (TW) - National Center for High-performance Computing


  b.twnic.net.tw
103.235.88.1
Yingge District/Taipei/Taiwan (TW) - TWNIC


 
203.73.24.24
Banqiao/New Taipei City/Taiwan (TW) - Digital United Inc.


 
2001:45b1:0:5::24
Neihu District/Taiwan/Taiwan (TW) - SEEDNET-TWNIC


  c.twnic.net.tw
168.95.192.10
Neihu District/Taiwan/Taiwan (TW) - Chunghwa Telecom Co., Ltd.


  d.twnic.net.tw
202.169.175.130
Yingge District/Taipei/Taiwan (TW) - Academia Sinica


 
60.199.165.187
Taipei/Taiwan/Taiwan (TW) - Taiwan Fixed Network


 
2001:4541:9010:7::187
Kanzijiao/Taiwan/Taiwan (TW) - Taiwan Fixed Network Co., Ltd


 
2001:c08:175:128::175:128
Yingge District/Taipei/Taiwan (TW) - Academia Sinica


  edudns-a1.edu.tw
192.83.166.18
Yingge District/Taipei/Taiwan (TW) - Taiwan Academic Network (TANet) Information Center


 
2001:288:1:1006:192:83:166:18
Taipei/Taiwan/Taiwan (TW) - T-MOE.GOV.TW


  edudns-a2.edu.tw
140.111.34.133
New Taipei City/Taiwan (TW) - TANet


 
2001:288:0:34::133
Taipei/Taiwan/Taiwan (TW) - T-MOE.GOV.TW


  edudns-a3.edu.tw
140.111.34.134
New Taipei City/Taiwan (TW) - TANet


 
2001:288:0:34::134
Taipei/Taiwan/Taiwan (TW) - T-MOE.GOV.TW


  edudns-c1.edu.tw
140.111.233.3
Taipei/Taipei City/Taiwan (TW) - TANet


T 
2001:288:0:233::3
Taipei/Taiwan/Taiwan (TW) - T-MOE.GOV.TW


  edudns-c2.edu.tw
140.111.233.4
Taipei/Taipei City/Taiwan (TW) - TANet


T 
2001:288:0:233::4
Taipei/Taiwan/Taiwan (TW) - T-MOE.GOV.TW


  edudns-m1.edu.tw

tw
  a.dns.tw


  anytld.apnic.net / ns4-cdg.apnic.net


  b.dns.tw


  c.dns.tw


  d.dns.tw


  e.dns.tw


  f.dns.tw


T  g.dns.tw


  h.dns.tw / 5.ams.pch


4. SOA-Entries


Domain:tw
Zone-Name:
Primary:
Mail:
Serial:
Refresh:
Retry:
Expire:
TTL:
num Entries:1


Domain:tw
Zone-Name:tw
Primary:a.dns.tw
Mail:snw.twnic.net.tw
Serial:2010871390
Refresh:3600
Retry:900
Expire:1296000
TTL:900
num Entries:8


Domain:edu.tw
Zone-Name:
Primary:
Mail:
Serial:
Refresh:
Retry:
Expire:
TTL:
num Entries:4


Domain:edu.tw
Zone-Name:edu.tw
Primary:edudns-m1.edu.tw
Mail:abuse.moe.edu.tw
Serial:2013418445
Refresh:14400
Retry:1440
Expire:3600000
TTL:300
num Entries:1


Domain:edu.tw
Zone-Name:edu.tw
Primary:edudns-m1.edu.tw
Mail:abuse.moe.edu.tw
Serial:2013418446
Refresh:14400
Retry:1440
Expire:3600000
TTL:300
num Entries:16


Domain:nchu.edu.tw
Zone-Name:nchu.edu.tw
Primary:nchud1.nchu.edu.tw
Mail:root.nchud1.nchu.edu.tw
Serial:2024062101
Refresh:36000
Retry:720
Expire:2419200
TTL:3600
num Entries:2


Domain:iotool.nchu.edu.tw
Zone-Name:nchu.edu.tw
Primary:nchud1.nchu.edu.tw
Mail:root.nchud1.nchu.edu.tw
Serial:2024062101
Refresh:36000
Retry:720
Expire:2419200
TTL:3600
num Entries:1


Domain:www.iotool.nchu.edu.tw
Zone-Name:
Primary:
Mail:
Serial:
Refresh:
Retry:
Expire:
TTL:
num Entries:1


5. Screenshots

Startaddress: https://iotool.nchu.edu.tw/login.php, address used: https://iotool.nchu.edu.tw/login.php, Screenshot created 2024-07-10 08:08:09 +00:0

Mobil (412px x 732px)

1081 milliseconds

Screenshot mobile - https://iotool.nchu.edu.tw/login.php
Mobil + Landscape (732px x 412px)

1085 milliseconds

Screenshot mobile landscape - https://iotool.nchu.edu.tw/login.php
Screen (1280px x 1680px)

2955 milliseconds

Screenshot Desktop - https://iotool.nchu.edu.tw/login.php

Mobile- and other Chrome-Checks

widthheight
visual Viewport396716
content Size408720

Fatal: Horizontal scrollbar detected. Content-size width is greater then visual Viewport width.

6. Url-Checks


:

:
DomainnameHttp-StatusredirectSec.G
• http://iotool.nchu.edu.tw/
140.120.1.145
-14

10.017
T
Timeout - The operation has timed out.

• https://iotool.nchu.edu.tw/
140.120.1.145
302
https://iotool.nchu.edu.tw/login.php
7.530
B
Date: Wed, 10 Jul 2024 06:04:19 GMT
Server: Apache/2.4.54, (Unix), OpenSSL/1.1.1s, PHP/8.2.0, mod_perl/2.0.12, Perl/v5.34.1
X-Powered-By: PHP/8.2.0
Location: login.php
Connection: close
Content-Length: 0
Content-Type: text/html; charset=UTF-8

• https://iotool.nchu.edu.tw/login.php
No GZip used - 2057 / 4919 - 41.82 % possible
Inline-JavaScript (∑/total): 3/1316 Inline-CSS (∑/total): 0/0
200

Html is minified: 178.29 %
9.777
B
Date: Wed, 10 Jul 2024 06:04:46 GMT
Server: Apache/2.4.54, (Unix), OpenSSL/1.1.1s, PHP/8.2.0, mod_perl/2.0.12, Perl/v5.34.1
X-Powered-By: PHP/8.2.0
Set-Cookie: PHPSESSID=ikpokeccn8agd32m8c7lgobp5b; path=/
Cache-Control: no-store, must-revalidate, no-cache
Pragma: no-cache
Connection: close
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Content-Length: 4919
Content-Type: text/html; charset=UTF-8

• http://iotool.nchu.edu.tw/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
140.120.1.145
-14

10.014
T
Timeout - The operation has timed out.
Visible Content:

• https://140.120.1.145/
140.120.1.145
302
https://iotool.nchu.edu.tw/login.php
7.300
N
Certificate error: RemoteCertificateNameMismatch
Date: Wed, 10 Jul 2024 06:04:38 GMT
Server: Apache/2.4.54, (Unix), OpenSSL/1.1.1s, PHP/8.2.0, mod_perl/2.0.12, Perl/v5.34.1
X-Powered-By: PHP/8.2.0
Location: login.php
Connection: close
Content-Length: 0
Content-Type: text/html; charset=UTF-8

7. Comments


1. General Results, most used to calculate the result

Aname "iotool.nchu.edu.tw" is subdomain, public suffix is ".edu.tw", top-level-domain is ".tw", top-level-domain-type is "country-code", Country is Taiwan (Province of China), tld-manager is "Taiwan Network Information Center (TWNIC)", num .tw-domains preloaded: 324 (complete: 245733)
AGood: All ip addresses are public addresses
Warning: Only one ip address found: iotool.nchu.edu.tw 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: iotool.nchu.edu.tw has no ipv6 address.
AGood: No asked Authoritative Name Server had a timeout
ADNS: "Name Error" means: No www-dns-entry defined. This isn't a problem
Ahttps://iotool.nchu.edu.tw/ 140.120.1.145
302
https://iotool.nchu.edu.tw/login.php
Correct redirect https to https
Ahttps://140.120.1.145/ 140.120.1.145
302
https://iotool.nchu.edu.tw/login.php
Correct redirect https to https
AGood: destination is https
AGood - only one version with Http-Status 200
AGood: one preferred version: non-www is preferred
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)
Bhttps://iotool.nchu.edu.tw/ 140.120.1.145
302

Missing HSTS-Header
Bhttps://iotool.nchu.edu.tw/login.php
200

Missing HSTS-Header
Bhttps://iotool.nchu.edu.tw/login.php
200
PHPSESSID=ikpokeccn8agd32m8c7lgobp5b; path=/
Cookie sent via https, but not marked as secure
Bhttps://iotool.nchu.edu.tw/login.php
200
PHPSESSID=ikpokeccn8agd32m8c7lgobp5b; path=/
Cookie without a SameSite-Attribute. Possible values are: Strict/Lax/None. Cookie may not work as expected, if "None" is wanted, but browsers use "Lax" as default value.
Nhttps://140.120.1.145/ 140.120.1.145
302
https://iotool.nchu.edu.tw/login.php
Error - Certificate isn't trusted, RemoteCertificateNameMismatch
XFatal error: Nameserver doesn't support TCP connection: edudns-a2.edu.tw / 2001:288:0:34::133: Timeout
XFatal error: Nameserver doesn't support TCP connection: edudns-a3.edu.tw / 2001:288:0:34::134: Timeout
XFatal error: Nameserver doesn't support TCP connection: edudns-c1.edu.tw / 2001:288:0:233::3: Timeout
XFatal error: Nameserver doesn't support TCP connection: edudns-c2.edu.tw / 2001:288:0:233::4: Timeout
XFatal error: Nameserver doesn't support TCP connection: pds.nchu.edu.tw / 140.120.1.21: 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 iotool.nchu.edu.tw, 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.iotool.nchu.edu.tw

2. Header-Checks (Cross-Origin-* headers are alpha - started 2024-06-05)

Fiotool.nchu.edu.tw
Content-Security-Policy
Critical: Missing Header:
Fiotool.nchu.edu.tw
X-Content-Type-Options
Critical: Missing Header:
Fiotool.nchu.edu.tw
Referrer-Policy
Critical: Missing Header:
Fiotool.nchu.edu.tw
Permissions-Policy
Critical: Missing Header:
Biotool.nchu.edu.tw
Cross-Origin-Embedder-Policy
Info: Missing Header
Biotool.nchu.edu.tw
Cross-Origin-Opener-Policy
Info: Missing Header
Biotool.nchu.edu.tw
Cross-Origin-Resource-Policy
Info: Missing Header

3. DNS- and NameServer - Checks

AInfo:: 2 Root-climbing DNS Queries required to find all IPv4- and IPv6-Addresses of 2 Name Servers.
AInfo:: 2 Queries complete, 2 with IPv6, 0 with IPv4.
AGood: All DNS Queries done via IPv6.
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.nchud1.nchu.edu.tw (140.120.1.2, 2001:288:5001::1:2), pds.nchu.edu.tw (140.120.1.21)
AGood (1 - 3.0):: An average of 1.0 queries per domain name server required to find all ip addresses of all name servers.
AInfo:: 2 different Name Servers found: nchud1.nchu.edu.tw, pds.nchu.edu.tw, 2 Name Servers included in Delegation: nchud1.nchu.edu.tw, pds.nchu.edu.tw, 2 Name Servers included in 1 Zone definitions: nchud1.nchu.edu.tw, pds.nchu.edu.tw, 1 Name Servers listed in SOA.Primary: nchud1.nchu.edu.tw.
AGood: Only one SOA.Primary Name Server found.: nchud1.nchu.edu.tw.
AGood: SOA.Primary Name Server included in the delegation set.: nchud1.nchu.edu.tw.
AGood: Consistency between delegation and zone. The set of NS records served by the authoritative name servers must match those proposed for the delegation in the parent zone. Ordered list of name servers: nchud1.nchu.edu.tw, pds.nchu.edu.tw
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: 2 different Name Servers found
Warning: No Name Server IPv6 address found. IPv6 is the future, so your name servers should be visible via IPv6.: 2 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.: 2 Name Servers, 1 Top Level Domain: edu.tw
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: nchu.edu.tw
Warning: All Name Servers from the same Country / IP location.: 2 Name Servers, 1 Countries: TW
AInfo: Ipv4-Subnet-list: 2 Name Servers, 1 different subnets (first Byte): 140., 1 different subnets (first two Bytes): 140.120., 1 different subnets (first three Bytes): 140.120.1.
XFatal: All Name Server IPv4 addresses from the same subnet. Check https://www.iana.org/help/nameserver-requirements to learn some basics about name server configurations. If you manage these name servers, fix it. If it's your provider, change your provider.:
AGood: Nameserver supports TCP connections: 1 good Nameserver
AGood: Nameserver supports Echo Capitalization: 1 good Nameserver
XNameserver Timeout checking Echo Capitalization: a.twnic.net.tw / 130.211.241.105
XNameserver Timeout checking Echo Capitalization: edudns-c1.edu.tw / 2001:288:0:233::3
XNameserver Timeout checking Echo Capitalization: edudns-c2.edu.tw / 2001:288:0:233::4
XNameserver Timeout checking Echo Capitalization: g.dns.tw
AGood: Nameserver supports EDNS with max. 512 Byte Udp payload, message is smaller: 1 good Nameserver
XNameserver Timeout checking EDNS512: a.twnic.net.tw / 130.211.241.105
XNameserver Timeout checking EDNS512: edudns-c1.edu.tw / 2001:288:0:233::3
XNameserver Timeout checking EDNS512: edudns-c2.edu.tw / 2001:288:0:233::4
XNameserver Timeout checking EDNS512: g.dns.tw
AGood: Nameserver has passed 10 EDNS-Checks (OP100, FLAGS, V1, V1OP100, V1FLAGS, DNSSEC, V1DNSSEC, NSID, COOKIE, CLIENTSUBNET): 1 good Nameserver
Nameserver doesn't pass all EDNS-Checks: a.twnic.net.tw / 130.211.241.105: 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.
Nameserver doesn't pass all EDNS-Checks: edudns-c1.edu.tw / 2001:288:0:233::3: 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.
Nameserver doesn't pass all EDNS-Checks: edudns-c2.edu.tw / 2001:288:0:233::4: 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.
Nameserver doesn't pass all EDNS-Checks: edudns-m1.edu.tw: OP100: no result. FLAGS: no result. V1: no result. V1OP100: no result. V1FLAGS: no result. DNSSEC: no result. V1DNSSEC: no result. NSID: no result. COOKIE: no result. CLIENTSUBNET: no result.
Nameserver doesn't pass all EDNS-Checks: g.dns.tw: 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.
Nameserver doesn't pass all EDNS-Checks: nchud1.nchu.edu.tw: OP100: no result. FLAGS: no result. V1: no result. V1OP100: no result. V1FLAGS: no result. DNSSEC: no result. V1DNSSEC: no result. NSID: no result. COOKIE: no result. CLIENTSUBNET: no result.
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

http://iotool.nchu.edu.tw/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 140.120.1.145
-14

Fatal: Check of /.well-known/acme-challenge/random-filename has a timeout. Creating a Letsencrypt certificate via http-01 challenge can't work. You need a running webserver (http) and an open port 80. If it's a home server + ipv4, perhaps a correct port forwarding port 80 extern ⇒ working port intern is required. Port 80 / http can redirect to another domain port 80 or port 443, but not other ports. If it's a home server, perhaps your ISP blocks port 80. Then you may use the dns-01 challenge. Trouble creating a certificate? Use https://community.letsencrypt.org/ to ask.
https://iotool.nchu.edu.tw/login.php
200

Warning: https result with status 200 and size greater then 1024 Bytes without GZip found. Add GZip support so the html content is compressed.
https://iotool.nchu.edu.tw/login.php
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.
https://iotool.nchu.edu.tw/login.php
200

Warning: Https result with status 200 found, Html-Content is too big. Should be max. 110 %. May contain inline CSS / JavaScript, too much comments or white space. Re-used ressources - create files with a long Cache-Control max-age header. Remove comments and white space.
https://iotool.nchu.edu.tw/login.php
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://iotool.nchu.edu.tw/login.php
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.: 1 script elements without defer/async.
Warning: CSS / JavaScript found without GZip support. Send these ressources with GZip. 5 external CSS / JavaScript files without GZip found - 0 with GZip, 5 complete
AGood: All images with internal compression not sent via GZip. Images (.png, .jpg) are already compressed, so an additional GZip isn't helpful. 3 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. 5 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, 5 complete.
Warning: Images with a missing or too short Cache-Control header found. Browsers should cache and re-use these files. 2 image files without Cache-Control-Header, 1 with Cache-Control, but no max-age, 0 with Cache-Control max-age too short (minimum 7 days), 0 with Cache-Control long enough, 3 complete.
AGood: All checked attribute values are enclosed in quotation marks (" or ').
AGood: Some img-elements have a valid alt-attribute.: 3 img-elements found, 2 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
ADuration: 952800 milliseconds, 952.800 seconds


8. Connections

DomainIPPortCert.ProtocolKeyExchangeStrengthCipherStrengthHashAlgorithmOCSP stapling
Domain/KeyExchangeIP/StrengthPort/CipherCert./StrengthProtocol/HashAlgorithmOCSP stapling
iotool.nchu.edu.tw
iotool.nchu.edu.tw
443
ok
Tls12
ECDH Ephermal
255
Aes256
256
Sha384
not supported
ok
iotool.nchu.edu.tw
iotool.nchu.edu.tw
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=iotool.nchu.edu.tw

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


iotool.nchu.edu.tw
140.120.1.145
443
ok
Tls12
ECDH Ephermal
255
Aes256
256
Sha384
not supported
ok

iotool.nchu.edu.tw
140.120.1.145
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=iotool.nchu.edu.tw

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


140.120.1.145
140.120.1.145
443
name does not match
Tls12
ECDH Ephermal
255
Aes256
256
Sha384
not supported
ok

140.120.1.145
140.120.1.145
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=iotool.nchu.edu.tw

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


9. Certificates

1.
1.
CN=iotool.nchu.edu.tw
11.04.2024
10.07.2024
3 days expired
iotool.nchu.edu.tw - 1 entry
1.
1.
CN=iotool.nchu.edu.tw
11.04.2024

10.07.2024
3 days expired
iotool.nchu.edu.tw - 1 entry

KeyalgorithmRSA encryption (2048 bit)
Signatur:SHA256 With RSA-Encryption
Serial Number:0328B895EBC4A3F281F5AC45756232010653
Thumbprint:C292FACD7EF6416FBB2221C9F7524F3273C82AD0
SHA256 / Certificate:/c1Y7BA7t6K2ygHJlIhETWcUvQp9Z/bCHQ9DBmOz0Ks=
SHA256 hex / Cert (DANE * 0 1):e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA256 hex / PublicKey (DANE * 1 1):a16e993171c6893d05e9b5478eab30494f76265704b67254ec58146b14ae3af8
SHA256 hex / Subject Public Key Information (SPKI):a16e993171c6893d05e9b5478eab30494f76265704b67254ec58146b14ae3af8 (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 429 days


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

15.09.2025
expires in 429 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 3978 days


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

04.06.2035
expires in 3978 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
0
1

CertSpotter-IdIssuernot beforenot afterDomain namesLE-Duplicatenext LE
7104798346
leaf cert
CN=R3, O=Let's Encrypt, C=US
2024-04-11 07:49:04
2024-07-10 07:49:03
iotool.nchu.edu.tw - 1 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
0
2

CRT-IdIssuernot beforenot afterDomain namesLE-Duplicatenext LE
12686301437
leaf cert
CN=R3, O=Let's Encrypt, C=US
2024-04-11 05:49:04
2024-07-10 05:49:03
iotool.nchu.edu.tw
1 entries


11786676005
leaf cert
CN=R3, O=Let's Encrypt, C=US
2024-01-18 03:10:36
2024-04-17 02:10:35
iotool.nchu.edu.tw
1 entries



11. Html-Content - Entries

Summary

Subresource Integrity (SRI)
DomainnameHtmlElementrel/property∑ size∑ problems∑ int.∑ ext.∑ Origin poss.∑ SRI ParseErrors∑ SRI valid∑ SRI missing
https://iotool.nchu.edu.tw/login.php
a

1

0


0
0
0


form

1

0


0
0
0


img

3
144,632 Bytes
0
3
0
0
0
0


link
stylesheet
4
529,821 Bytes
0
4
0
0
0
0


meta
other
3

0


0
0
0


script

1
146,920 Bytes
0
1
0
0
0
0

Details

DomainnameHtml-Elementname/equiv/ property/relhref/src/contentHttpStatusmsgStatus
https://iotool.nchu.edu.tw/login.php

a




1
ok








form
post



1
ok








img
src
img/iotbanner_new.png
200

1
ok
alt: iot設備盤點工具image/png, missing X-Content-Type-Options nosniff

No Cache-Control header
No GZip - 66708 Bytes






img
src
img/nchu-logo_0.png
200

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

No Cache-Control header
No GZip - 75770 Bytes






img
src
imgcode.php
200

1
ok
no alt-Attributeimage/PNG, missing X-Content-Type-Options nosniff

Cache-Control: no-store, must-revalidate, no-cache - max-age missing.
No GZip - 2154 Bytes






link
stylesheet
css/sb-admin-2.min.css
200

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

No Cache-Control - header
GZip required: 223518 Bytes




local SRI possible, possible hash-values:

sha256-+9f4iO9fv/bi2zJEf90mO88DMGuZUvYwj/Tj7TA+7tU=
sha384-bpXF8Wo9ab157Lnvj3g9eSx82SuXFy+wkUNhG3H+7JE6YWwjV5rEyhFBkuzagz2J
sha512-Gg+cQPVRhR2EFLGMSXLJw9ycVKz234K/2jb5nqq6dPUb6OC0ww4lliDZ27L9czJEXj033vtUT16SHyT755YQJg==

<link rel="stylesheet" href="css/sb-admin-2.min.css" crossorigin="anonymous" integrity="sha256-+9f4iO9fv/bi2zJEf90mO88DMGuZUvYwj/Tj7TA+7tU=" />



Content loaded via url("...")

data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='%23fff' width='8' height='8' viewBox='0 0 8 8'%3e%3cpath d='M2.75 0l-1.5 1.5L3.75 4l-2.5 2.5L2.75 8l4-4-4-4z'/%3e%3c/svg%3e1
data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='%23fff' width='8' height='8' viewBox='0 0 8 8'%3e%3cpath d='M5.25 0l-4 4 4 4 1.5-1.5L4.25 4l2.5-2.5L5.25 0z'/%3e%3c/svg%3e1
data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='none' stroke='%23e74a3b' viewBox='0 0 12 12'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23e74a3b' stroke='none'/%3e%3c/svg%3e2
data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='-4 -4 8 8'%3e%3ccircle r='3' fill='%23fff'/%3e%3c/svg%3e1
data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='30' height='30' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%280, 0, 0, 0.5%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e1
data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='30' height='30' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.5%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e1
data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='4' height='4' viewBox='0 0 4 4'%3e%3cpath stroke='%23fff' d='M0 2h4'/%3e%3c/svg%3e1
data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='4' height='5' viewBox='0 0 4 5'%3e%3cpath fill='%235a5c69' d='M2 0L0 2h4zm0 5L0 3h4z'/%3e%3c/svg%3e3
data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='8' height='8' viewBox='0 0 8 8'%3e%3cpath fill='%231cc88a' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e2
data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='8' height='8' viewBox='0 0 8 8'%3e%3cpath fill='%23fff' d='M6.564.75l-3.59 3.612-1.538-1.55L0 4.26l2.974 2.99L8 2.193z'/%3e%3c/svg%3e1
https://source.unsplash.com/K4mSJ7kc0As/600x8001
https://source.unsplash.com/Mv9hjnEUHR4/600x8001
https://source.unsplash.com/oWTW-jNGl9I/600x8001

link
stylesheet
vendor/bootstrap/js/bootstrap.min.css
200

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

No Cache-Control - header
GZip required: 207911 Bytes




local SRI possible, possible hash-values:

sha256-NVH5L+8YYtfJir0wpiNHN6g2B6mw/+Zms/B8eQUQEZg=
sha384-bnIcYT9nL4ksPjgBxvi84plAK9z2CKkPdn6X9eb6uyZz9i0ffBxx/lkfTQnn6nA/
sha512-2vO/q7kxgsCzjHCdJyiwDoyNrq5Jbixmnra/vyTFirLqcHQu1VqBXKlg3PltrLG3gh3QLWZvpG3LmenbErJq+w==

<link rel="stylesheet" href="vendor/bootstrap/js/bootstrap.min.css" crossorigin="anonymous" integrity="sha256-NVH5L+8YYtfJir0wpiNHN6g2B6mw/+Zms/B8eQUQEZg=" />



Content loaded via url("...")

data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23dc3545'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23dc3545' stroke='none'/%3e%3c/svg%3e2
data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23000'%3e%3cpath d='M.293.293a1 1 0 011.414 0L8 6.586 14.293.293a1 1 0 111.414 1.414L9.414 8l6.293 6.293a1 1 0 01-1.414 1.414L8 9.414l-6.293 6.293a1 1 0 01-1.414-1.414L6.586 8 .293 1.707a1 1 0 010-1.414z'/%3e%3c/svg%3e1
data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%230c63e4'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e1
data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23212529'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e1
data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23fff'%3e%3cpath d='M11.354 1.646a.5.5 0 0 1 0 .708L5.707 8l5.647 5.646a.5.5 0 0 1-.708.708l-6-6a.5.5 0 0 1 0-.708l6-6a.5.5 0 0 1 .708 0z'/%3e%3c/svg%3e1
data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23fff'%3e%3cpath d='M4.646 1.646a.5.5 0 0 1 .708 0l6 6a.5.5 0 0 1 0 .708l-6 6a.5.5 0 0 1-.708-.708L10.293 8 4.646 2.354a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e1
data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e3
data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3e%3cpath fill='none' stroke='%23fff' stroke-linecap='round' stroke-linejoin='round' stroke-width='3' d='M6 10h8'/%3e%3c/svg%3e1
data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3e%3cpath fill='none' stroke='%23fff' stroke-linecap='round' stroke-linejoin='round' stroke-width='3' d='M6 10l3 3l6-6'/%3e%3c/svg%3e1
data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%280, 0, 0, 0.55%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e1
data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.55%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e1
data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%23198754' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e2
data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'%3e%3ccircle r='2' fill='%23fff'/%3e%3c/svg%3e1
data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'%3e%3ccircle r='3' fill='%2386b7fe'/%3e%3c/svg%3e1
data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'%3e%3ccircle r='3' fill='%23fff'/%3e%3c/svg%3e1
data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'%3e%3ccircle r='3' fill='rgba%280, 0, 0, 0.25%29'/%3e%3c/svg%3e1

link
stylesheet
vendor/fontawesome-free/css/all.min.css
200

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

No Cache-Control - header
GZip required: 74965 Bytes




local SRI possible, possible hash-values:

sha256-PJt7IV0BvTTxnTNPGMBtptxNKieoVvYZoMrJ8JC8qLk=
sha384-OKki3ltJKgTpIJG97gFOY06U2ppH5VCxnb3mW27L6G8tVusLP2PVtl7R+Mexg2s7
sha512-p5BTIuUkHTXhXlV+LXPhcYw8WIXQT+o1iYO6Bf7OcRviRIx4cpLr6EXOI7I7YGWvuvBjGCpTKEutz1eopTLYaw==

<link rel="stylesheet" href="vendor/fontawesome-free/css/all.min.css" crossorigin="anonymous" integrity="sha256-PJt7IV0BvTTxnTNPGMBtptxNKieoVvYZoMrJ8JC8qLk=" />



Content loaded via url("...")

../webfonts/fa-brands-400.eot1
../webfonts/fa-brands-400.eot?#iefix1
../webfonts/fa-brands-400.svg#fontawesome1
../webfonts/fa-brands-400.ttf1
../webfonts/fa-brands-400.woff1
../webfonts/fa-brands-400.woff21
../webfonts/fa-regular-400.eot1
../webfonts/fa-regular-400.eot?#iefix1
../webfonts/fa-regular-400.svg#fontawesome1
../webfonts/fa-regular-400.ttf1
../webfonts/fa-regular-400.woff1
../webfonts/fa-regular-400.woff21
../webfonts/fa-solid-900.eot1
../webfonts/fa-solid-900.eot?#iefix1
../webfonts/fa-solid-900.svg#fontawesome1
../webfonts/fa-solid-900.ttf1
../webfonts/fa-solid-900.woff1
../webfonts/fa-solid-900.woff21

link
stylesheet
vendor/fontawesome-free/css/googleapis.css
200

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

No Cache-Control - header
GZip required: 23427 Bytes




local SRI possible, possible hash-values:

sha256-BkcN8Wpql1iMCakTIpebKJdC9D7BXFZkp0gatXsjXxk=
sha384-RGRJ03zws1s+KValxVc/2qarEycLmjQU5m7fHf4hDKHq1IF1+df835wJDI6OsEmK
sha512-5sgtaiQzw18MXAPYlj48dIqSgp12Wuy+UxOWs41Vg1R0xl/MGjQUjSvp4mCc8h2dFGnL79Egrwa3atvq5CjB5w==

<link rel="stylesheet" href="vendor/fontawesome-free/css/googleapis.css" crossorigin="anonymous" integrity="sha256-BkcN8Wpql1iMCakTIpebKJdC9D7BXFZkp0gatXsjXxk=" />



Content loaded via url("...")

https://fonts.gstatic.com/s/nunito/v25/XRXV3I6Li01BKofIMeaBXso.woff27
https://fonts.gstatic.com/s/nunito/v25/XRXV3I6Li01BKofINeaB.woff27
https://fonts.gstatic.com/s/nunito/v25/XRXV3I6Li01BKofIO-aBXso.woff27
https://fonts.gstatic.com/s/nunito/v25/XRXV3I6Li01BKofIOOaBXso.woff27
https://fonts.gstatic.com/s/nunito/v25/XRXV3I6Li01BKofIOuaBXso.woff27
https://fonts.gstatic.com/s/nunito/v25/XRXX3I6Li01BKofIMNaDRs4.woff27
https://fonts.gstatic.com/s/nunito/v25/XRXX3I6Li01BKofIMNaHRs71cA.woff27
https://fonts.gstatic.com/s/nunito/v25/XRXX3I6Li01BKofIMNaMRs71cA.woff27
https://fonts.gstatic.com/s/nunito/v25/XRXX3I6Li01BKofIMNaNRs71cA.woff27
https://fonts.gstatic.com/s/nunito/v25/XRXX3I6Li01BKofIMNaORs71cA.woff27

meta

utf-8


1
ok








meta
X-UA-Compatible
IE=edge


1
ok








meta
viewport
width=device-width, initial-scale=1, shrink-to-fit=no


1
ok








script
src
./js/jquery-3.7.1.min.js
200

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

No Cache-Control - header
GZip required: 146920 Bytes




local SRI possible, possible hash-values:

sha256-nGyW2XzdB8akcxQvSdAdKyW9KIY3e8M97bg9KPRqb70=
sha384-9xPYUIHNd8efuSXDbUBvzyLyaawvEc45gRzwBxA7EWAbnkWxYgNYVrh64axGno6R
sha512-m6h4PIjx7xP8f1Gi9R1YPYdWULNuWtvbP+sfZn7TSqJAM9SShvRsQKrUvOn6zZi9T16oedHefVSJjSU1Q4No3A==

<script src="./js/jquery-3.7.1.min.js" crossorigin="anonymous" integrity="sha256-nGyW2XzdB8akcxQvSdAdKyW9KIY3e8M97bg9KPRqb70=" />




12. Nameserver - IP-Adresses

Required Root-climbing DNS-Queries to find ip addresses of all Name Servers: nchud1.nchu.edu.tw, pds.nchu.edu.tw

QNr.DomainTypeNS used
1
tw
NS
a.root-servers.net (2001:503:ba3e::2:30)

Answer: a.dns.tw, anytld.apnic.net, b.dns.tw, c.dns.tw, d.dns.tw, e.dns.tw, f.dns.tw, g.dns.tw, h.dns.tw
2
nchud1.nchu.edu.tw: 140.120.1.2, 2001:288:5001::1:2
NS
a.dns.tw (2001:45b1:0:5::25)

Answer: pds.nchu.edu.tw
140.120.1.21


13. CAA - Entries

DomainnameflagNameValue∑ Queries∑ Timeout
iotool.nchu.edu.tw
0

no CAA entry found
1
0
nchu.edu.tw
0

no CAA entry found
1
0
edu.tw
0

no CAA entry found
1
0
tw
0

no CAA entry found
1
0


14. TXT - Entries

DomainnameTXT EntryStatus∑ Queries∑ Timeout
nchu.edu.tw
_globalsign-domain-verification=l0FS2mDK3KkAriqr7NzE0hy-dCZUGj7W_QqRZkEgRQ
ok
1
0
nchu.edu.tw
681jlU0JDzHcWIJQuRn4_lHwU2hPStCZ93YTVJBlUgE
looks good, but no _acme-challenge in domain name?
1
0
nchu.edu.tw
7Eq32j7Z6L05HscUWUOfRluMDn0VcTtNLEQT0ydF_o4
looks good, but no _acme-challenge in domain name?
1
0
nchu.edu.tw
google-site-verification=CCRk7PsdL18gyVDLR8z2hSE7Nr6ly9INwYQlr8pVo-0
ok
1
0
nchu.edu.tw
google-site-verification=Hf6oFylGXiXrrv_HDTvnF623vJWyD1Z-eXkewAlB-L0
ok
1
0
nchu.edu.tw
google-site-verification=Y5Fwyhgp5OcuMoSzq2yZhWxB-EEQtO47ux15mAGzkF8
ok
1
0
nchu.edu.tw
i4j99juHG8Ue3L5f85Bp9DTDN6zeOjqGVJtIJ8rfIPc
looks good, but no _acme-challenge in domain name?
1
0
nchu.edu.tw
Public-CA-domain-verification=9775820F384A71A4A196C3B32184F940
ok
1
0
nchu.edu.tw
qhgs1ata22q7os6dagnqc50v86
ok
1
0
nchu.edu.tw
v=spf1 ip4:140.120.0.0/16 include:_spf.google.com include:amazonses.com include:mailgun.org ~all
ok
1
0
nchu.edu.tw
XRTHZMVXBHUU7CKQKP2QHXHSJKPP7WTDVQ5RYVMY
ok
1
0
iotool.nchu.edu.tw

ok
1
0
_acme-challenge.iotool.nchu.edu.tw

Name Error - The domain name does not exist
1
0
_acme-challenge.iotool.nchu.edu.tw.nchu.edu.tw

Name Error - The domain name does not exist
1
0
_acme-challenge.iotool.nchu.edu.tw.iotool.nchu.edu.tw

Name Error - The domain name does not exist
1
0


15. DomainService - Entries (SPF-Check is alpha - 2024-06-22, DMARC-Detailcheck is alpha - 2024-07-06)

No DomainServiceEntries entries found



16. Cipher Suites

Summary
DomainIPPortnum CipherstimeStd.ProtocolForward Secrecy
iotool.nchu.edu.tw
140.120.1.145
443
5 Ciphers129.59 sec
0 without, 5 FS
100.00 %
Complete

1
5 Ciphers
5.00 Ciphers/Check
129.59 sec129.59 sec/Check
0 without, 5 FS
100.00 %

Details
DomainIPPortCipher (OpenSsl / IANA)
iotool.nchu.edu.tw
140.120.1.145
443
ECDHE-RSA-CHACHA20-POLY1305
(Secure)
TLSv1.2
0xCC,0xA8
FS
5 Ciphers, 129.59 sec
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
ECDH
RSA
CHACHA20/POLY1305(256)
AEAD



ECDHE-RSA-AES256-GCM-SHA384
(Secure)
TLSv1.2
0xC0,0x30
FS

TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
ECDH
RSA
AESGCM(256)
AEAD



DHE-RSA-AES256-GCM-SHA384
(Secure)
TLSv1.2
0x00,0x9F
FS

TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
DH
RSA
AESGCM(256)
AEAD



ECDHE-RSA-AES128-GCM-SHA256
(Secure)
TLSv1.2
0xC0,0x2F
FS

TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
ECDH
RSA
AESGCM(128)
AEAD



DHE-RSA-AES128-GCM-SHA256
(Secure)
TLSv1.2
0x00,0x9E
FS

TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
DH
RSA
AESGCM(128)
AEAD


17. Portchecks

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



Permalink: https://check-your-website.server-daten.de/?i=73814c08-9ca1-47df-9d06-413839b1a68c


Last Result: https://check-your-website.server-daten.de/?q=iotool.nchu.edu.tw - 2024-07-10 07:52:32


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