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THE CERTIFICATE BEHIND THE CONNECTION

TLS certificate checker.

Inspect SSL/TLS certificates for any public domain or subdomain.

Checks HTTPS on port 443, including subject alternative names, validity dates and the presented chain.

SSL certificate

TLSv1.3

citictel-cpc.com · 202.76.67.59:443

Unverified
Certificate verification failed. These are unverified certificate details presented by the server. Peer certificate CN=`*.citictel-cpc.com' did not match expected CN=`citictel-cpc.com'

Certificate verification failed

Subject
C=HK L=Hong Kong Island O=CITIC Telecom International CPC Limited CN=*.citictel-cpc.com
Issuer
C=US O=DigiCert Inc CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1
Valid from
2026-01-20T00:00:00+00:00
Expires
2027-02-20T23:59:59+00:00
Days remaining
142
Serial (hex)
09A6B3CAC827598EC0F51F597AB5E9F4
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.citictel-cpc.com, DNS:www.citictel-cpc.com

SHA-256 fingerprint

7B:D4:B9:B5:72:FF:2B:3C:1D:30:8D:8F:A8:49:29:F8:C4:39:F0:53:F4:0C:3D:28:69:6A:3A:B3:A9:28:4F:1E
Certificate extensions & PEM
authorityKeyIdentifier
74:85:80:C0:66:C7:DF:37:DE:CF:BD:29:37:AA:03:1D:BE:ED:CD:17
subjectKeyIdentifier
07:A9:E5:08:C2:EF:AA:BA:7C:C7:65:44:8F:23:44:4D:F3:87:0B:24
subjectAltName
DNS:*.citictel-cpc.com, DNS:www.citictel-cpc.com
certificatePolicies
Policy: 2.23.140.1.2.2 CPS: http://www.digicert.com/CPS
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crl Full Name: URI:http://crl4.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crl
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com CA Issuers - URI:http://cacerts.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crt
basicConstraints
CA:FALSE
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 4C:63:DC:98:E5:9C:1D:AB:88:F6:1E:8A:3D:DE:AE:8F: AB:44:A3:37:7B:5F:9B:94:C3:FB:A1:9C:FC:C1:BE:26 Timestamp : Jan 20 10:43:20.760 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:93:EF:03:07:D8:5E:85:F8:1E:8D:6A: 05:02:4A:AF:E6:07:BF:37:B2:41:9C:C3:06:7D:04:C0: 2A:CF:6E:7E:AE:02:21:00:A4:0E:63:33:EC:47:F0:95: 56:F4:77:43:71:FF:09:A9:8C:A4:FE:BA:B5:73:1E:CB: 9C:12:B7:2B:C6:66:47:29 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 1C:9F:68:2C:E9:FA:F0:45:69:50:F8:1B:96:8A:87:DD: DB:32:10:D8:4C:E6:C8:B2:E3:82:52:4A:C4:CF:59:9F Timestamp : Jan 20 10:43:20.791 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:66:40:2B:32:A2:5D:47:7B:86:DF:62:98: 2E:88:38:91:2A:85:5D:09:30:4B:DF:E1:9E:1A:44:F1: 47:29:B4:0C:02:21:00:8F:17:EA:B5:F1:9F:10:55:0F: 2D:AC:52:0C:4D:71:BB:4A:6F:BB:80:CD:DF:23:15:39: 33:FC:79:E8:3B:03:27 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 60:4C:9A:AF:7A:7F:77:5F:01:D4:06:FC:92:0D:C8:99: EB:0B:1C:7D:F8:C9:52:1B:FA:FA:17:77:3B:97:8B:C9 Timestamp : Jan 20 10:43:20.968 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:D2:E6:05:00:B6:E3:DA:E1:64:63:4D: 9D:1D:68:18:5D:9B:C9:C4:24:4F:95:93:8F:9F:7F:2F: B9:7B:7A:A9:DE:02:21:00:9C:23:11:CA:61:D1:58:99: 71:61:E5:4A:33:42:A4:38:5C:17:63:12:18:8B:FB:FE: 96:2B:DF:43:5F:C2:A0:A3
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-01T05:35:38+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=DigiCert Inc CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2021-03-30T00:00:00+00:00
Expires
2031-03-29T23:59:59+00:00
Days remaining
1640
Serial (hex)
0CF5BD062B5602F47AB8502C23CCF066
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

C8:02:5F:9F:C6:5F:DF:C9:5B:3C:A8:CC:78:67:B9:A5:87:B5:27:79:73:95:79:17:46:3F:C8:13:D0:B6:25:A9
Certificate extensions & PEM
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
74:85:80:C0:66:C7:DF:37:DE:CF:BD:29:37:AA:03:1D:BE:ED:CD:17
authorityKeyIdentifier
4E:22:54:20:18:95:E6:E3:6E:E6:0F:FA:FA:B9:12:ED:06:17:8F:39
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com CA Issuers - URI:http://cacerts.digicert.com/DigiCertGlobalRootG2.crt
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalRootG2.crl
certificatePolicies
Policy: 2.16.840.1.114412.2.1 Policy: 2.23.140.1.1 Policy: 2.23.140.1.2.1 Policy: 2.23.140.1.2.2 Policy: 2.23.140.1.2.3
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2013-08-01T12:00:00+00:00
Expires
2038-01-15T12:00:00+00:00
Days remaining
4124
Serial (hex)
033AF1E6A711A9A0BB2864B11D09FAE5
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

CB:3C:CB:B7:60:31:E5:E0:13:8F:8D:D3:9A:23:F9:DE:47:FF:C3:5E:43:C1:14:4C:EA:27:D4:6A:5A:B1:CB:5F
Certificate extensions & PEM
basicConstraints
CA:TRUE
keyUsage
Digital Signature, Certificate Sign, CRL Sign
subjectKeyIdentifier
4E:22:54:20:18:95:E6:E3:6E:E6:0F:FA:FA:B9:12:ED:06:17:8F:39
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

One endpoint on port 443. Server-presented chain; no revocation, OCSP, CT or full TLS security scan.

View certificate JSON

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