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SSL check results of learn.tsinghua.edu.cn

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Discover if the webservers of learn.tsinghua.edu.cn can be reached through a secure connection.

Summary

JSON Refresh

Report created Mon, 21 Oct 2024 16:05:45 +0000

The webservers of learn.tsinghua.edu.cn can be reached through a secure connection.

Servers

Hostname / IP address Certificates Protocol
learn.tsinghua.edu.cn
101.6.15.67
 *.tsinghua.edu.cn
HSTS
unexpected EOF
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
5 s
learn.tsinghua.edu.cn
2402:f000:1:402:101:6:15:67
 *.tsinghua.edu.cn
HSTS
unexpected EOF
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
5 s

Certificates

First seen at:

CN=*.tsinghua.edu.cn

Certificate chain
  • *.tsinghua.edu.cn
    • remaining
    • 4096 bit
    • sha256WithRSAEncryption
      • R11
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • *.tsinghua.edu.cn
Alternative Names
  • *.card.tsinghua.edu.cn
  • *.cic.tsinghua.edu.cn
  • *.cuihu.org.cn
  • *.join-tsinghua.edu.cn
  • *.net.edu.cn
  • *.pt.tsinghua.edu.cn
  • *.sem.tsinghua.edu.cn
  • *.sysc.tsinghua.edu.cn
  • *.syx.thcic.cn
  • *.thcic.cn
  • *.tsinghua.edu.cn
  • *.tsinghua.org.cn
  • *.zgclab.edu.cn
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R11
validity period
Not valid before
2024-10-04
Not valid after
2025-01-02
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
63:9D:55:12:E3:3E:3B:14:05:F6:71:FC:64:4A:D0:AB:6B:C9:86:33:2A:9C:D7:E6:75:EB:B1:EB:EA:5E:BB:41
SHA1
71:1F:B1:05:5A:F9:07:BE:CA:06:35:49:E7:63:66:78:2A:5E:D4:5D
X509v3 extensions
subjectKeyIdentifier
  • 69:43:82:19:7E:33:4E:30:5F:D9:2C:5B:57:F0:C2:09:87:CC:3D:21
authorityKeyIdentifier
  • keyid:C5:CF:46:A4:EA:F4:C3:C0:7A:6C:95:C4:2D:B0:5E:92:2F:26:E3:B9
authorityInfoAccess
  • OCSP - URI:http://r11.o.lencr.org
  • CA Issuers - URI:http://r11.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : E0:92:B3:FC:0C:1D:C8:E7:68:36:1F:DE:61:B9:96:4D:
  • 0A:52:78:19:8A:72:D6:72:C4:B0:4D:A5:6D:6F:54:04
  • Timestamp : Oct 4 16:03:56.653 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:2B:1A:34:D7:CE:82:05:B6:EF:21:3D:C3:
  • B7:BE:90:C1:EA:52:F7:54:AB:EA:2E:0F:92:E8:22:1F:
  • 5F:9A:5C:59:02:21:00:8D:5D:47:BB:79:E9:7E:FC:DD:
  • BA:E2:24:36:48:0D:87:51:B2:A1:22:3D:02:2C:08:83:
  • 9B:71:DF:7E:DB:C9:AB
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : CF:11:56:EE:D5:2E:7C:AF:F3:87:5B:D9:69:2E:9B:E9:
  • 1A:71:67:4A:B0:17:EC:AC:01:D2:5B:77:CE:CC:3B:08
  • Timestamp : Oct 4 16:03:58.718 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:E5:E2:45:DA:2B:4D:2F:03:81:D8:F7:
  • BE:11:45:39:D7:8E:BD:FD:04:2E:3E:78:FF:4E:74:F8:
  • 10:2B:FC:12:1F:02:21:00:88:64:D1:4E:EB:5A:D8:78:
  • 20:A9:D4:87:CE:19:99:18:3C:70:BA:92:5F:92:0D:52:
  • 01:2E:2F:D8:C3:8E:4B:0E