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


Info: Problems with 3.048.289 Letsencrypt certificates (378.325 accounts). They must be revoked (revocation starts 2020-03-04 20:00 UTC) - see Revoking certain certificates on March 4. Update 2020-03-07: Good news: Mass-revocation is canceled.

This tool: A check (SerialNumber) is added. Letsencrypt has published a list of critical SerialNumbers, this list is checked. See the part "9. Certificates". If there is a warning, renew that certificate and replace the current certificate.





1. IP-Addresses

HostTIP-Addressis auth.∑ Queries∑ Timeout
pl.csie.ntut.edu.tw
A
140.124.181.82
Fenjihu/Taiwan/Taiwan (TW) - T-NTUT.EDU.TW
No Hostname found
yes
1
0

AAAA

yes


www.pl.csie.ntut.edu.tw

Name Error
yes
1
0


2. DNSSEC

Zone (*)DNSSEC - Informations (beta)

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



Status: Valid because published



2 DNSKEY RR found



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



Public Key with Algorithm 8, KeyTag 22545, Flags 256



1 RRSIG RR to validate DNSKEY RR found



Algorithm: 8, 0 Labels, original TTL: 172800 sec, Signature-expiration: 11.12.2019, 00:00:00, Signature-Inception: 20.11.2019, 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



1 RRSIG RR to validate DS RR found



Algorithm: 8, 1 Labels, original TTL: 86400 sec, Signature-expiration: 09.12.2019, 05:00:00, Signature-Inception: 26.11.2019, 04:00:00, KeyTag 22545, Signer-Name: (root)



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 22545 used to validate the DS RRSet in the parent zone



3 DNSKEY RR found



Public Key with Algorithm 8, KeyTag 23376, Flags 256



Public Key with Algorithm 8, KeyTag 33051, Flags 256



Public Key with Algorithm 8, KeyTag 40792, Flags 257 (SEP = Secure Entry Point)



2 RRSIG RR to validate DNSKEY RR found



Algorithm: 8, 1 Labels, original TTL: 900 sec, Signature-expiration: 26.12.2019, 08:06:12, Signature-Inception: 26.11.2019, 08:06:12, KeyTag 33051, Signer-Name: tw



Algorithm: 8, 1 Labels, original TTL: 900 sec, Signature-expiration: 26.12.2019, 08:06:12, Signature-Inception: 26.11.2019, 08:06:12, KeyTag 40792, Signer-Name: tw



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 33051 used to validate the DNSKEY RRSet



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 40792 used to validate the DNSKEY RRSet



Status: Valid Chain of trust. Parent-DS with Algorithm 8, KeyTag 40792, DigestType 2 and Digest "oF20sN65cQMTYbtiHouxuNc0ZmWj0bBuwUMa230BXuk=" validates local Key with the same values, Key ist Secure Entry Point (SEP) of the zone

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



1 RRSIG RR to validate DS RR found



Algorithm: 8, 2 Labels, original TTL: 300 sec, Signature-expiration: 26.12.2019, 08:06:12, Signature-Inception: 26.11.2019, 08:06:12, KeyTag 33051, Signer-Name: tw



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 33051 used to validate the DS RRSet in the parent zone



3 DNSKEY RR found



Public Key with Algorithm 8, KeyTag 32734, Flags 257 (SEP = Secure Entry Point)



Public Key with Algorithm 8, KeyTag 44223, Flags 256



Public Key with Algorithm 8, KeyTag 49731, Flags 256



2 RRSIG RR to validate DNSKEY RR found



Algorithm: 8, 2 Labels, original TTL: 172800 sec, Signature-expiration: 29.11.2019, 20:09:07, Signature-Inception: 25.11.2019, 19:59:49, KeyTag 32734, Signer-Name: edu.tw



Algorithm: 8, 2 Labels, original TTL: 172800 sec, Signature-expiration: 29.11.2019, 20:09:07, Signature-Inception: 25.11.2019, 19:59:49, KeyTag 44223, Signer-Name: edu.tw



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 32734 used to validate the DNSKEY RRSet



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 44223 used to validate the DNSKEY RRSet



Status: Valid Chain of trust. Parent-DS with Algorithm 8, KeyTag 32734, DigestType 2 and Digest "NTNW9HNMy6cVf9QLS+G/Z1bA56cBtrDQC0yqul8lLds=" validates local Key with the same values, Key ist Secure Entry Point (SEP) of the zone

Zone: ntut.edu.tw
ntut.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 domain name between the hashed NSEC3-owner and the hashed NextOwner. So the parent zone confirmes the non-existence of a DS RR.Bitmap: No Bitmap?



0 DNSKEY RR found





Zone: csie.ntut.edu.tw
csie.ntut.edu.tw
0 DS RR in the parent zone found



0 DNSKEY RR found





Zone: pl.csie.ntut.edu.tw
pl.csie.ntut.edu.tw
0 DS RR in the parent zone found



0 DNSKEY RR found





Zone: www.pl.csie.ntut.edu.tw
www.pl.csie.ntut.edu.tw
0 DS RR in the parent zone found


3. Name Servers

DomainNameserverNS-IP
www.pl.csie.ntut.edu.tw
  csie.ntut.edu.tw

pl.csie.ntut.edu.tw
  csie.ntut.edu.tw

csie.ntut.edu.tw
 


  csie.ntut.edu.tw

ntut.edu.tw
  galaxy.cc.ntut.edu.tw


U  nsbackup.ntut.edu.tw


  sun.cc.ntut.edu.tw

edu.tw
  a.twnic.net.tw


T  b.twnic.net.tw


  c.twnic.net.tw


  d.twnic.net.tw


  moemoon.edu.tw


  moestar.edu.tw

tw
T  a.dns.tw


  anytld.apnic.net / ns4-de1.apnic.net


  b.dns.tw


T  c.dns.tw


  d.dns.tw


T  e.dns.tw


  f.dns.tw


  g.dns.tw


  h.dns.tw / 2.ber.pch


  ns.twnic.net


4. SOA-Entries


Domain:tw
Primary:a.dns.tw
Mail:snw.twnic.net.tw
Serial:2009056988
Refresh:3600
Retry:900
Expire:1296000
TTL:900
num Entries:8


Domain:edu.tw
Primary:edudns-m1.edu.tw
Mail:abuse.moe.edu.tw
Serial:2013171154
Refresh:14400
Retry:1440
Expire:3600000
TTL:300
num Entries:1


Domain:edu.tw
Primary:edudns-m1.edu.tw
Mail:abuse.moe.edu.tw
Serial:2013171154
Refresh:14400
Retry:1440
Expire:3600000
TTL:300
num Entries:1


Domain:edu.tw
Primary:edudns-m1.edu.tw
Mail:abuse.moe.edu.tw
Serial:2013171154
Refresh:14400
Retry:1440
Expire:3600000
TTL:300
num Entries:1


Domain:edu.tw
Primary:edudns-m1.edu.tw
Mail:abuse.moe.edu.tw
Serial:2013171154
Refresh:14400
Retry:1440
Expire:3600000
TTL:300
num Entries:1


Domain:edu.tw
Primary:edudns-m1.edu.tw
Mail:abuse.moe.edu.tw
Serial:2013171170
Refresh:14400
Retry:1440
Expire:3600000
TTL:300
num Entries:1


Domain:edu.tw
Primary:edudns-m1.edu.tw
Mail:abuse.moe.edu.tw
Serial:2013171170
Refresh:14400
Retry:1440
Expire:3600000
TTL:300
num Entries:1


Domain:edu.tw
Primary:edudns-m1.edu.tw
Mail:abuse.moe.edu.tw
Serial:2013171170
Refresh:14400
Retry:1440
Expire:3600000
TTL:300
num Entries:1


Domain:edu.tw
Primary:edudns-m1.edu.tw
Mail:abuse.moe.edu.tw
Serial:2013171170
Refresh:14400
Retry:1440
Expire:3600000
TTL:300
num Entries:1


Domain:edu.tw
Primary:edudns-m1.edu.tw
Mail:abuse.moe.edu.tw
Serial:2013171206
Refresh:14400
Retry:1440
Expire:3600000
TTL:300
num Entries:1


Domain:edu.tw
Primary:edudns-m1.edu.tw
Mail:abuse.moe.edu.tw
Serial:2013171206
Refresh:14400
Retry:1440
Expire:3600000
TTL:300
num Entries:1


Domain:edu.tw
Primary:edudns-m1.edu.tw
Mail:abuse.moe.edu.tw
Serial:2013171206
Refresh:14400
Retry:1440
Expire:3600000
TTL:300
num Entries:1


Domain:edu.tw
Primary:edudns-m1.edu.tw
Mail:abuse.moe.edu.tw
Serial:2013171206
Refresh:14400
Retry:1440
Expire:3600000
TTL:300
num Entries:1


Domain:edu.tw
Primary:edudns-m1.edu.tw
Mail:abuse.moe.edu.tw
Serial:2013171207
Refresh:14400
Retry:1440
Expire:3600000
TTL:300
num Entries:1


Domain:edu.tw
Primary:edudns-m1.edu.tw
Mail:abuse.moe.edu.tw
Serial:2013171207
Refresh:14400
Retry:1440
Expire:3600000
TTL:300
num Entries:1


Domain:edu.tw
Primary:edudns-m1.edu.tw
Mail:abuse.moe.edu.tw
Serial:2013171207
Refresh:14400
Retry:1440
Expire:3600000
TTL:300
num Entries:1


Domain:edu.tw
Primary:edudns-m1.edu.tw
Mail:abuse.moe.edu.tw
Serial:2013171207
Refresh:14400
Retry:1440
Expire:3600000
TTL:300
num Entries:1


Domain:edu.tw
Primary:edudns-m1.edu.tw
Mail:abuse.moe.edu.tw
Serial:2013171208
Refresh:14400
Retry:1440
Expire:3600000
TTL:300
num Entries:1


Domain:edu.tw
Primary:edudns-m1.edu.tw
Mail:abuse.moe.edu.tw
Serial:2013171208
Refresh:14400
Retry:1440
Expire:3600000
TTL:300
num Entries:1


Domain:edu.tw
Primary:edudns-m1.edu.tw
Mail:abuse.moe.edu.tw
Serial:2013171208
Refresh:14400
Retry:1440
Expire:3600000
TTL:300
num Entries:1


Domain:edu.tw
Primary:edudns-m1.edu.tw
Mail:abuse.moe.edu.tw
Serial:2013171208
Refresh:14400
Retry:1440
Expire:3600000
TTL:300
num Entries:1


Domain:ntut.edu.tw
Primary:galaxy.cc.ntut.edu.tw
Mail:network.ntut.edu.tw
Serial:2018121477
Refresh:10800
Retry:3600
Expire:2419200
TTL:900
num Entries:2


Domain:csie.ntut.edu.tw
Primary:csie.ntut.edu.tw
Mail:root.csie.ntut.edu.tw
Serial:2019082801
Refresh:86400
Retry:1800
Expire:1728000
TTL:259200
num Entries:1


5. Screenshots (Beta)

Startaddress: https://pl.csie.ntut.edu.tw, address used: https://pl.csie.ntut.edu.tw/, Screenshot created 2020-02-14 07:50:32 +00:0

Mobil (412px x 732px)

568 milliseconds

Screenshot mobile - https://pl.csie.ntut.edu.tw/
Screen (1280px x 1680px)

4068 milliseconds

Screenshot Desktop - https://pl.csie.ntut.edu.tw/
Mobil + Landscape (732px x 412px)

602 milliseconds

Screenshot mobile landscape - https://pl.csie.ntut.edu.tw/

Mobile- and other Chrome-Checks

widthheight
visual Viewport412732
content Size412732

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

Chrome-Connection: secure. secure connection settings. The connection to this site is encrypted and authenticated using TLS 1.2, ECDHE_RSA with X25519, and CHACHA20_POLY1305.

Chrome-Resources : secure. all served securely. All resources on this page are served securely.

6. Url-Checks


:

:
Domainname Http-StatusredirectSec.G
• http://pl.csie.ntut.edu.tw/
140.124.181.82
301
https://pl.csie.ntut.edu.tw/
Html is minified: 100.00 %
0.634
A
Date: Tue, 26 Nov 2019 13:02:39 GMT
Server: Apache/2.4.29 (Ubuntu)
Location: https://pl.csie.ntut.edu.tw/
Content-Length: 321
Connection: close
Content-Type: text/html; charset=iso-8859-1

• https://pl.csie.ntut.edu.tw/
140.124.181.82 GZip used - 515 / 1041 - 50.53 %
Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 0/0
200

Html is minified: 152.42 %
7.820
B
Date: Tue, 26 Nov 2019 13:02:40 GMT
Server: Apache/2.4.29 (Ubuntu)
Last-Modified: Tue, 19 Sep 2017 05:47:08 GMT
ETag: "411-5598463d49ddb-gzip"
Accept-Ranges: bytes
Vary: Accept-Encoding
Content-Encoding: gzip
Content-Length: 515
Connection: close
Content-Type: text/html

• http://pl.csie.ntut.edu.tw/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
140.124.181.82
Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 0/0
301
https://pl.csie.ntut.edu.tw/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
Html is minified: 100.00 %
0.633
A
Visible Content: Moved Permanently The document has moved here . Apache/2.4.29 (Ubuntu) Server at pl.csie.ntut.edu.tw Port 80
Date: Tue, 26 Nov 2019 13:02:47 GMT
Server: Apache/2.4.29 (Ubuntu)
Location: https://pl.csie.ntut.edu.tw/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
Content-Length: 390
Connection: close
Content-Type: text/html; charset=iso-8859-1

• https://pl.csie.ntut.edu.tw/.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: 100.00 %
6.940
A
Not Found
Visible Content: Not Found The requested URL was not found on this server. Apache/2.4.29 (Ubuntu) Server at pl.csie.ntut.edu.tw Port 443
Date: Tue, 26 Nov 2019 13:02:49 GMT
Server: Apache/2.4.29 (Ubuntu)
Content-Length: 282
Connection: close
Content-Type: text/html; charset=iso-8859-1

7. Comments

Aname "pl.csie.ntut.edu.tw" is subdomain, public suffix is "edu.tw", top-level-domain-type is "country-code", Country is Taiwan (Province of China), tld-manager is "Taiwan Network Information Center (TWNIC)"
Agood: All ip addresses are public addresses
Agood: No asked Authoritative Name Server had a timeout
ADNS: "Name Error" means: No www-dns-entry defined. This isn't a problem
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: Some urls with http status 200/404 have a complete Content-Type header (MediaType / MediaSubType + correct charset):1 complete Content-Type - header (2 urls)
https://pl.csie.ntut.edu.tw/ 140.124.181.82


Url with incomplete Content-Type - header - missing charset
Ahttp://pl.csie.ntut.edu.tw/ 140.124.181.82
301
https://pl.csie.ntut.edu.tw/
correct redirect http - https with the same domain name
Bhttps://pl.csie.ntut.edu.tw/ 140.124.181.82
200

Missing HSTS-Header
XFatal error: Nameserver doesn't support TCP connection: csie.ntut.edu.tw: Timeout
XFatal error: Nameserver doesn't support TCP connection: nsbackup.ntut.edu.tw: Fatal error - no NameServer IP-Address or connection. Details: One or more errors occurred. - Der angegebene Host ist unbekannt
AGood: Nameserver supports Echo Capitalization: 1 good Nameserver
XNameserver Timeout checking Echo Capitalization: a.dns.tw
XNameserver Timeout checking Echo Capitalization: b.twnic.net.tw
XNameserver Timeout checking Echo Capitalization: c.dns.tw
XNameserver Timeout checking Echo Capitalization: e.dns.tw
AGood: Nameserver supports EDNS with max. 512 Byte Udp payload, message is smaller: 1 good Nameserver
XNameserver Timeout checking EDNS512: a.dns.tw
XNameserver Timeout checking EDNS512: b.twnic.net.tw
XNameserver Timeout checking EDNS512: e.dns.tw

Nameserver doesn't pass all EDNS-Checks: a.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: b.twnic.net.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: c.dns.tw: OP100: fatal timeout. FLAGS: ok. V1: ok. V1OP100: fatal timeout. V1FLAGS: fatal timeout. DNSSEC: fatal timeout. V1DNSSEC: fatal timeout. NSID: ok. COOKIE: fatal timeout. CLIENTSUBNET: ok.
Nameserver doesn't pass all EDNS-Checks: csie.ntut.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: csie.ntut.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: e.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: nsbackup.ntut.edu.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.
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.
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.
AGood: No https + http status 200 with inline CSS / JavaScript found
https://pl.csie.ntut.edu.tw/ 140.124.181.82
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://pl.csie.ntut.edu.tw/ 140.124.181.82
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.
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://pl.csie.ntut.edu.tw/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
404
6.940 seconds
Warning: 404 needs more then one second
ADuration: 913123 milliseconds, 913.123 seconds


8. Connections

DomainIPPortCert.ProtocolKeyExchangeStrengthCipherStrengthHashAlgorithmOCSP stapling
Domain/KeyExchangeIP/StrengthPort/CipherCert./StrengthProtocol/HashAlgorithmOCSP stapling
pl.csie.ntut.edu.tw
140.124.181.82
443
ok
Tls12
ECDH Ephermal
255
Aes128
128
Sha256
error checking OCSP stapling
ok
pl.csie.ntut.edu.tw
140.124.181.82
443
ok
Tls12

ECDH Ephermal
255
Aes128
128
Sha256
error checking OCSP stapling
ok
no http/2 via ALPN  Tls.1.2
Tls.1.1
Tls.1.0
no http/2 via ALPN Tls.1.2
Tls.1.1
Tls.1.0
Chain (complete)
1CN=pl.csie.ntut.edu.tw

2CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US

pl.csie.ntut.edu.tw
pl.csie.ntut.edu.tw
443
ok
Tls12
ECDH Ephermal
255
Aes128
128
Sha256
error checking OCSP stapling
ok
pl.csie.ntut.edu.tw
pl.csie.ntut.edu.tw
443
ok
Tls12

ECDH Ephermal
255
Aes128
128
Sha256
error checking OCSP stapling
ok
no http/2 via ALPN  Tls.1.2
Tls.1.1
Tls.1.0
no http/2 via ALPN Tls.1.2
Tls.1.1
Tls.1.0
Chain (complete)
1CN=pl.csie.ntut.edu.tw

2CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US


9. Certificates

1.
1.
CN=pl.csie.ntut.edu.tw
10.11.2019
08.02.2020
51 days expired
pl.csie.ntut.edu.tw - 1 entry
1.
1.
CN=pl.csie.ntut.edu.tw
10.11.2019

08.02.2020
51 days expired
pl.csie.ntut.edu.tw - 1 entry

KeyalgorithmRSA encryption (2048 bit)
Signatur:SHA256 With RSA-Encryption
Serial Number:03959489D3DA2F904DFE33C8EB011A7955AE
Thumbprint:C473535D96EC5F3E208D8338C73326999FAD5014
SHA256 / Certificate:S2B7K9KUJ3+F9aZ4Bf99IenKhX6okj/I4qG/uaztZnQ=
SHA256 hex / Cert (DANE * 0 1):e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA256 hex / PublicKey (DANE * 1 1):5c7f6a8dc9e75ce2b8bb561ef2646e5cbe1fd20dbe5925eb584c8bac2e9add84
SHA256 hex / Subject Public Key Information (SPKI):2a4139a3f0413151417718cd262a628d2f7903344c1587b8abf74664ca780e3f
SPKI checked via https://v1.pwnedkeys.com/spki-hash:Good: Key isn't compromised
OCSP - Url:http://ocsp.int-x3.letsencrypt.org
OCSP - must staple:no
Certificate Transparency:yes


2.
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
17.03.2016
17.03.2021
expires in 352 days


2.
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
17.03.2016

17.03.2021
expires in 352 days


KeyalgorithmRSA encryption (2048 bit)
Signatur:SHA256 With RSA-Encryption
Serial Number:0A0141420000015385736A0B85ECA708
Thumbprint:E6A3B45B062D509B3382282D196EFE97D5956CCB
SHA256 / Certificate:JYR9Zo608E/dQLErawdAxWfafQJDCOtsLJb+QdneIY0=
SHA256 hex / Cert (DANE * 0 1):25847d668eb4f04fdd40b12b6b0740c567da7d024308eb6c2c96fe41d9de218d
SHA256 hex / PublicKey (DANE * 1 1):60b87575447dcba2a36b7d11ac09fb24a9db406fee12d2cc90180517616e8a18
SHA256 hex / Subject Public Key Information (SPKI):cbb93d32de628874a3ecfb92affadc97f1b795f84cc6f24221a089dee1aa25ad
SPKI checked via https://v1.pwnedkeys.com/spki-hash:Good: Key isn't compromised
OCSP - Url:http://isrg.trustid.ocsp.identrust.com
OCSP - must staple:no
Certificate Transparency:no


3.
CN=DST Root CA X3, O=Digital Signature Trust Co.
30.09.2000
30.09.2021
expires in 549 days


3.
CN=DST Root CA X3, O=Digital Signature Trust Co.
30.09.2000

30.09.2021
expires in 549 days


KeyalgorithmRSA encryption (2048 bit)
Signatur:SHA-1 with RSA Encryption
Serial Number:44AFB080D6A327BA893039862EF8406B
Thumbprint:DAC9024F54D8F6DF94935FB1732638CA6AD77C13
SHA256 / Certificate:BocmAzGnJAPZCfEF5pvPDTLhvSST/8bZIG0RvNZ3Bzk=
SHA256 hex / Cert (DANE * 0 1):0687260331a72403d909f105e69bcf0d32e1bd2493ffc6d9206d11bcd6770739
SHA256 hex / PublicKey (DANE * 1 1):563b3caf8cfef34c2335caf560a7a95906e8488462eb75ac59784830df9e5b2b
SHA256 hex / Subject Public Key Information (SPKI):29cc40db5e2de462a311cbbafaa1dc466960002335ecdf3317f2cd05c1d0bedf
SPKI checked via https://v1.pwnedkeys.com/spki-hash:Good: Key isn't compromised
OCSP - Url:
OCSP - must staple:no
Certificate Transparency:no



10. Last Certificates - Certificate Transparency Log Check

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

Issuerlast 7 daysactivenum Certs
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
0
1
2

CertSpotter-IdIssuernot beforenot afterDomain namesLE-Duplicatenext LE
1418989020
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-02-08 11:23:34
2020-05-08 11:23:34
pl.csie.ntut.edu.tw - 1 entries


1235837617
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-11-10 10:20:18
2020-02-08 10:20:18
pl.csie.ntut.edu.tw - 1 entries



2. Source crt.sh - old and new certificates, sometimes very slow (Update 2020-01-11: Should now work again - code updated. Old message: currently no newer certificates - read Crt.sh has stopped - Letsencrypt-forum - may work next week again - 2019-12-02 - but I must check the code).

Issuerlast 7 daysactivenum Certs
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
0 /0 new
1
16

CRT-IdIssuernot beforenot afterDomain namesLE-Duplicatenext LE
2442228738
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-02-08 10:23:34
2020-05-08 09:23:34
pl.csie.ntut.edu.tw
1 entries


2094070590
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-11-10 09:20:18
2020-02-08 09:20:18
pl.csie.ntut.edu.tw
1 entries


1775608362
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-08-13 05:44:24
2019-11-11 06:44:24
pl.csie.ntut.edu.tw
1 entries


1749292402
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-08-04 09:36:50
2019-11-02 10:36:50
pl.csie.ntut.edu.tw
1 entries


1472556046
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-05-13 00:44:26
2019-08-11 00:44:26
pl.csie.ntut.edu.tw
1 entries


1125844787
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-01-19 20:08:52
2019-04-19 19:08:52
pl.csie.ntut.edu.tw
1 entries


1088649449
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-01-07 07:50:22
2019-04-07 06:50:22
pl.csie.ntut.edu.tw
1 entries


1088607936
precert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-01-07 07:19:19
2019-04-07 06:19:19
pl.csie.ntut.edu.tw
1 entries


1059250628
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2018-12-26 15:43:54
2019-03-26 15:43:54
pl.csie.ntut.edu.tw
1 entries


1059242773
precert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2018-12-26 15:39:16
2019-03-26 15:39:16
pl.csie.ntut.edu.tw
1 entries


1059182981
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2018-12-26 14:59:11
2019-03-26 14:59:11
pl.csie.ntut.edu.tw
1 entries


1059150339
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2018-12-26 14:35:42
2019-03-26 14:35:42
pl.csie.ntut.edu.tw
1 entries


1059128629
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2018-12-26 14:20:28
2019-03-26 14:20:28
pl.csie.ntut.edu.tw
1 entries


851393278
precert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2018-10-11 22:32:50
2019-01-09 23:32:50
pl.csie.ntut.edu.tw
1 entries


613695302
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2018-07-13 14:54:01
2018-10-11 14:54:01
pl.csie.ntut.edu.tw
1 entries


396000053
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2018-04-12 23:13:21
2018-07-11 23:13:21
pl.csie.ntut.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://pl.csie.ntut.edu.tw/
140.124.181.82
frame

5

0


0
0
0


meta
other
1

0


0
0
0

Details

DomainnameHtml-Elementname/equiv/ property/relhref/src/contentHttpStatusmsgStatus
https://pl.csie.ntut.edu.tw/
140.124.181.82
frame
src
php/left.html


1
ok








frame
src
php/main.html


1
ok








frame
src
php/menu.html


1
ok








frame
src
php/untitled.html


2
ok








meta
Content-Type
text/html; charset=utf-8


1
ok








12. CAA - Entries

DomainnameflagNameValue∑ Queries∑ Timeout
pl.csie.ntut.edu.tw
0

no CAA entry found
1
0
csie.ntut.edu.tw
0

no CAA entry found
1
0
ntut.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


13. TXT - Entries

DomainnameTXT EntryStatus∑ Queries∑ Timeout
csie.ntut.edu.tw
v=spf1 mx ip4:140.124.180.1 mx:csie.ntut.edu.tw -all
ok
1
0
pl.csie.ntut.edu.tw

ok
1
0
_acme-challenge.pl.csie.ntut.edu.tw

Name Error - The domain name does not exist
1
0
_acme-challenge.pl.csie.ntut.edu.tw.csie.ntut.edu.tw

Name Error - The domain name does not exist
1
0
_acme-challenge.pl.csie.ntut.edu.tw.pl.csie.ntut.edu.tw

Name Error - The domain name does not exist
1
0


14. Portchecks

Domain or IPPortDescriptionResultAnswer
pl.csie.ntut.edu.tw
21
FTP
open


pl.csie.ntut.edu.tw
21
FTP
open


pl.csie.ntut.edu.tw
22
SSH



pl.csie.ntut.edu.tw
22
SSH



pl.csie.ntut.edu.tw
25
SMTP



pl.csie.ntut.edu.tw
25
SMTP



pl.csie.ntut.edu.tw
53
DNS



pl.csie.ntut.edu.tw
53
DNS



pl.csie.ntut.edu.tw
110
POP3



pl.csie.ntut.edu.tw
110
POP3



pl.csie.ntut.edu.tw
143
IMAP



pl.csie.ntut.edu.tw
143
IMAP



pl.csie.ntut.edu.tw
465
SMTP (encrypted)



pl.csie.ntut.edu.tw
465
SMTP (encrypted)



pl.csie.ntut.edu.tw
587
SMTP (encrypted, submission)



pl.csie.ntut.edu.tw
587
SMTP (encrypted, submission)



pl.csie.ntut.edu.tw
993
IMAP (encrypted)



pl.csie.ntut.edu.tw
993
IMAP (encrypted)



pl.csie.ntut.edu.tw
995
POP3 (encrypted)



pl.csie.ntut.edu.tw
995
POP3 (encrypted)



pl.csie.ntut.edu.tw
1433
MS SQL



pl.csie.ntut.edu.tw
1433
MS SQL



pl.csie.ntut.edu.tw
2082
cPanel (http)



pl.csie.ntut.edu.tw
2082
cPanel (http)



pl.csie.ntut.edu.tw
2083
cPanel (https)



pl.csie.ntut.edu.tw
2083
cPanel (https)



pl.csie.ntut.edu.tw
2086
WHM (http)



pl.csie.ntut.edu.tw
2086
WHM (http)



pl.csie.ntut.edu.tw
2087
WHM (https)



pl.csie.ntut.edu.tw
2087
WHM (https)



pl.csie.ntut.edu.tw
2089
cPanel Licensing



pl.csie.ntut.edu.tw
2089
cPanel Licensing



pl.csie.ntut.edu.tw
2095
cPanel Webmail (http)



pl.csie.ntut.edu.tw
2095
cPanel Webmail (http)



pl.csie.ntut.edu.tw
2096
cPanel Webmail (https)



pl.csie.ntut.edu.tw
2096
cPanel Webmail (https)



pl.csie.ntut.edu.tw
2222
DirectAdmin (http)



pl.csie.ntut.edu.tw
2222
DirectAdmin (http)



pl.csie.ntut.edu.tw
2222
DirectAdmin (https)



pl.csie.ntut.edu.tw
2222
DirectAdmin (https)



pl.csie.ntut.edu.tw
3306
mySql



pl.csie.ntut.edu.tw
3306
mySql



pl.csie.ntut.edu.tw
5224
Plesk Licensing



pl.csie.ntut.edu.tw
5224
Plesk Licensing



pl.csie.ntut.edu.tw
5432
PostgreSQL



pl.csie.ntut.edu.tw
5432
PostgreSQL



pl.csie.ntut.edu.tw
8080
Ookla Speedtest (http)



pl.csie.ntut.edu.tw
8080
Ookla Speedtest (http)



pl.csie.ntut.edu.tw
8080
Ookla Speedtest (https)



pl.csie.ntut.edu.tw
8080
Ookla Speedtest (https)



pl.csie.ntut.edu.tw
8083
VestaCP http



pl.csie.ntut.edu.tw
8083
VestaCP http



pl.csie.ntut.edu.tw
8083
VestaCP https



pl.csie.ntut.edu.tw
8083
VestaCP https



pl.csie.ntut.edu.tw
8443
Plesk Administration (https)



pl.csie.ntut.edu.tw
8443
Plesk Administration (https)



pl.csie.ntut.edu.tw
8447
Plesk Installer + Updates



pl.csie.ntut.edu.tw
8447
Plesk Installer + Updates



pl.csie.ntut.edu.tw
8880
Plesk Administration (http)



pl.csie.ntut.edu.tw
8880
Plesk Administration (http)



pl.csie.ntut.edu.tw
10000
Webmin (http)



pl.csie.ntut.edu.tw
10000
Webmin (http)



pl.csie.ntut.edu.tw
10000
Webmin (https)



pl.csie.ntut.edu.tw
10000
Webmin (https)



140.124.181.82
21
FTP
open


140.124.181.82
21
FTP
open


140.124.181.82
22
SSH



140.124.181.82
22
SSH



140.124.181.82
25
SMTP



140.124.181.82
25
SMTP



140.124.181.82
53
DNS



140.124.181.82
53
DNS



140.124.181.82
110
POP3



140.124.181.82
110
POP3



140.124.181.82
143
IMAP



140.124.181.82
143
IMAP



140.124.181.82
465
SMTP (encrypted)



140.124.181.82
465
SMTP (encrypted)



140.124.181.82
587
SMTP (encrypted, submission)



140.124.181.82
587
SMTP (encrypted, submission)



140.124.181.82
993
IMAP (encrypted)



140.124.181.82
993
IMAP (encrypted)



140.124.181.82
995
POP3 (encrypted)



140.124.181.82
995
POP3 (encrypted)



140.124.181.82
1433
MS SQL



140.124.181.82
1433
MS SQL



140.124.181.82
2082
cPanel (http)



140.124.181.82
2082
cPanel (http)



140.124.181.82
2083
cPanel (https)



140.124.181.82
2083
cPanel (https)



140.124.181.82
2086
WHM (http)



140.124.181.82
2086
WHM (http)



140.124.181.82
2087
WHM (https)



140.124.181.82
2087
WHM (https)



140.124.181.82
2089
cPanel Licensing



140.124.181.82
2089
cPanel Licensing



140.124.181.82
2095
cPanel Webmail (http)



140.124.181.82
2095
cPanel Webmail (http)



140.124.181.82
2096
cPanel Webmail (https)



140.124.181.82
2096
cPanel Webmail (https)



140.124.181.82
2222
DirectAdmin (http)



140.124.181.82
2222
DirectAdmin (http)



140.124.181.82
2222
DirectAdmin (https)



140.124.181.82
2222
DirectAdmin (https)



140.124.181.82
3306
mySql



140.124.181.82
3306
mySql



140.124.181.82
5224
Plesk Licensing



140.124.181.82
5224
Plesk Licensing



140.124.181.82
5432
PostgreSQL



140.124.181.82
5432
PostgreSQL



140.124.181.82
8080
Ookla Speedtest (http)



140.124.181.82
8080
Ookla Speedtest (http)



140.124.181.82
8080
Ookla Speedtest (https)



140.124.181.82
8080
Ookla Speedtest (https)



140.124.181.82
8083
VestaCP http



140.124.181.82
8083
VestaCP http



140.124.181.82
8083
VestaCP https



140.124.181.82
8083
VestaCP https



140.124.181.82
8443
Plesk Administration (https)



140.124.181.82
8443
Plesk Administration (https)



140.124.181.82
8447
Plesk Installer + Updates



140.124.181.82
8447
Plesk Installer + Updates



140.124.181.82
8880
Plesk Administration (http)



140.124.181.82
8880
Plesk Administration (http)



140.124.181.82
10000
Webmin (http)



140.124.181.82
10000
Webmin (http)



140.124.181.82
10000
Webmin (https)



140.124.181.82
10000
Webmin (https)





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