DNS
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

datacampus.hk · 103.214.147.176:443

Verified

Certificate chain, hostname and dates verified using this server’s CA store.

Subject
CN=datacampus.hk
Issuer
C=US O=Let's Encrypt CN=YR2
Valid from
2026-10-16T10:44:04+00:00
Expires
2027-01-14T10:44:03+00:00
Days remaining
83
Serial (hex)
065BF171C2D40863E18BE16FB3E6415C57C2
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:datacampus.hk, DNS:www.datacampus.hk

SHA-256 fingerprint

76:1C:5A:51:F0:9C:11:52:C1:37:92:B6:B4:A9:ED:7F:3E:97:AB:1F:E9:69:8A:5B:C6:22:56:6C:52:19:BA:1A
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
3A:6B:5E:22:06:CA:B5:D4:75:A9:99:A5:12:92:65:6A:DC:96:A4:09
authorityKeyIdentifier
40:15:2D:26:79:ED:32:20:9E:DF:9A:72:1D:D6:32:1F:81:0C:81:0C
authorityInfoAccess
CA Issuers - URI:http://yr2.i.lencr.org/
subjectAltName
DNS:datacampus.hk, DNS:www.datacampus.hk
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr2.c.lencr.org/67.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 44:C2:BD:0C:E9:14:0E:64:A5:C9:4A:01:93:0A:5A:A1: BB:35:97:0E:00:EE:11:16:89:68:2A:1C:44:D7:B5:66 Timestamp : Oct 16 11:42:34.355 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:B1:F2:F2:DA:87:FB:8A:EC:6D:3E:44: 70:AD:32:B5:50:74:80:24:91:E5:87:8F:D8:E4:94:36: 70:BE:E8:B6:FF:02:21:00:E8:F6:D1:5B:91:AD:69:0A: 00:85:BB:3E:6B:3D:D1:50:A4:E3:71:AE:F5:36:EB:12: 70:F9:80:E4:5B:B4:54:57 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : A2:81:00:18:73:4E:17:6E:1D:47:E0:95:40:F3:81:BA: 54:66:97:CD:63:A8:43:50:71:6E:B8:09:4E:DA:F1:0D Timestamp : Oct 16 11:42:34.653 2026 GMT Extensions: 00:00:05:00:25:6E:18:60 Signature : ecdsa-with-SHA256 30:46:02:21:00:95:FC:A0:2E:4A:12:E1:1F:09:6B:80: 0D:C2:2D:6A:6F:CD:FB:53:F2:18:A6:E4:E5:39:59:5C: B6:47:C7:8D:EB:02:21:00:F4:79:20:00:62:0A:C5:E9: B1:7F:A0:9F:F4:24:6E:F1:50:2F:DD:C7:E2:A3:71:A4: 59:0F:BC:A1:9B:5B:FD:0E
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-23T00:35:14+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=YR2
Issuer
C=US O=ISRG CN=Root YR
Valid from
2025-09-03T00:00:00+00:00
Expires
2028-09-02T23:59:59+00:00
Days remaining
680
Serial (hex)
4EBD24947E24D394802D84A52FD5B319
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

23:8B:85:A0:09:9C:65:B9:70:47:7D:57:24:F1:A1:D4:75:CE:50:58:CF:FE:4E:FA:87:33:89:9B:DB:86:3C:47
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
40:15:2D:26:79:ED:32:20:9E:DF:9A:72:1D:D6:32:1F:81:0C:81:0C
authorityKeyIdentifier
DE:E7:5B:60:D0:22:6D:40:28:7D:3F:0D:01:FE:A4:B5:52:B4:51:94
authorityInfoAccess
CA Issuers - URI:http://yr.i.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr.c.lencr.org/ 
-----BEGIN CERTIFICATE-----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==
-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=ISRG CN=Root YR
Issuer
C=US O=Internet Security Research Group CN=ISRG Root X1
Valid from
2026-05-13T00:00:00+00:00
Expires
2032-09-02T23:59:59+00:00
Days remaining
2141
Serial (hex)
F24B6D17F9D9AD7CB1C9FEA78782699F
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

07:26:39:D0:B1:40:D5:BF:FA:E1:6A:D9:C3:F6:CC:60:86:04:06:21:F5:1E:E6:1A:6D:46:A8:91:5C:07:CF:76
Certificate extensions & PEM
keyUsage
Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE
subjectKeyIdentifier
DE:E7:5B:60:D0:22:6D:40:28:7D:3F:0D:01:FE:A4:B5:52:B4:51:94
authorityKeyIdentifier
79:B4:59:E6:7B:B6:E5:E4:01:73:80:08:88:C8:1A:58:F6:E9:9B:6E
authorityInfoAccess
CA Issuers - URI:http://x1.i.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://x1.c.lencr.org/ 
-----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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