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

TLSv1.2

towngastelecom.com · 103.63.134.85:443

Verified

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

Subject
serialNumber=32523458 jurisdictionC=HK businessCategory=Private Organization C=HK ST=Hong Kong O=TOWNGAS TELECOMMUNICATIONS COMPANY LIMITED CN=towngastelecom.com
Issuer
C=GB O=Sectigo Limited CN=Sectigo Public Server Authentication CA EV R36
Valid from
2026-10-14T00:00:00+00:00
Expires
2027-04-30T23:59:59+00:00
Days remaining
195
Serial (hex)
3A840732ECE625BB008D014504D69E41
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:towngastelecom.com, DNS:www.towngastelecom.com

SHA-256 fingerprint

AF:CA:24:5F:D3:1E:70:2E:C4:3F:63:8E:1B:53:04:A2:88:17:8A:29:BD:2C:84:41:F1:3D:F1:17:BE:8E:66:DE
Certificate extensions & PEM
authorityKeyIdentifier
98:2D:5E:1E:8F:EB:54:F4:B9:FF:55:95:AD:4C:C7:7E:A4:98:AE:7B
subjectKeyIdentifier
AF:B9:02:C9:7D:00:97:E8:A5:58:7B:EA:43:6F:D1:39:5F:5B:07:2E
keyUsage
Digital Signature, Key Encipherment
basicConstraints
CA:FALSE
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
certificatePolicies
Policy: 1.3.6.1.4.1.6449.1.2.1.5.1 CPS: https://sectigo.com/CPS Policy: 2.23.140.1.1
crlDistributionPoints
Full Name: URI:http://crl.sectigo.com/SectigoPublicServerAuthenticationCAEVR36.crl
authorityInfoAccess
CA Issuers - URI:http://crt.sectigo.com/SectigoPublicServerAuthenticationCAEVR36.crt OCSP - URI:http://ocsp.sectigo.com
subjectAltName
DNS:towngastelecom.com, DNS:www.towngastelecom.com
ct_precert_scts
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 : Oct 14 15:23:00.273 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:19:68:95:D4:B1:D7:0C:38:CC:D0:93:BF: 62:9C:52:8C:28:7E:11:BE:AA:1A:64:1E:C7:70:82:19: 1F:08:89:2B:02:20:41:A7:8C:8F:55:96:9E:2E:2B:8B: D3:C1:26:8D:F6:C9:A5:9C:50:CB:5B:FF:C7:10:7D:46: 91:6B:19:8B:A4:11 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 : Oct 14 15:23:00.963 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:D0:D8:09:DC:43:39:61:18:DE:C5:58: D4:0A:4E:F3:F2:A7:82:1C:E1:6C:0F:41:AB:BE:B7:6E: 97:E9:9E:2B:E7:02:21:00:81:AC:EB:81:D5:7A:96:4F: D3:63:AE:75:0A:97:CD:B3:80:86:E4:65:C1:36:08:A5: FB:C2:54:53:D6:E0:64:67 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 1A:8B:9D:6B:8D:D7:91:D1:CD:05:49:ED:B6:03:55:D6: 06:B6:4F:AD:30:DB:71:FE:78:8F:0F:C7:C8:FB:C4:B1 Timestamp : Oct 14 15:23:01.579 2026 GMT Extensions: 00:00:05:00:08:8F:30:0F Signature : ecdsa-with-SHA256 30:45:02:20:0B:40:B1:8C:F9:84:28:D6:F1:55:9D:61: EE:9E:8A:0A:1F:7C:EC:F4:E1:9E:9C:B3:2A:4E:3F:5C: A7:D4:CA:A6:02:21:00:C5:12:1C:22:2F:07:25:C3:01: CD:EC:A4:4B:19:5B:A2:F3:72:F7:64:4D:75:D1:46:F8: 7B:F3:97:7F:2D:1B:FB
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-10-17T02:56:26+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=GB O=Sectigo Limited CN=Sectigo Public Server Authentication CA EV R36
Issuer
C=GB O=Sectigo Limited CN=Sectigo Public Server Authentication Root R46
Valid from
2021-03-22T00:00:00+00:00
Expires
2036-03-21T23:59:59+00:00
Days remaining
3443
Serial (hex)
6D4F7CAD335377C8C6E001DDE2E2C88E
Signature
RSA-SHA384
Public key
RSA 3072

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

7A:1A:24:28:5E:25:E9:4D:F2:7C:E8:B3:44:B1:BB:6B:32:F0:25:4F:F0:D7:B5:AB:6E:85:6A:E9:0C:FD:E5:5C
Certificate extensions & PEM
authorityKeyIdentifier
56:73:58:64:95:F9:92:1A:B0:12:2A:04:62:79:A1:40:15:88:21:49
subjectKeyIdentifier
98:2D:5E:1E:8F:EB:54:F4:B9:FF:55:95:AD:4C:C7:7E:A4:98:AE:7B
keyUsage
Digital Signature, Certificate Sign, CRL Sign
basicConstraints
CA:TRUE, pathlen:0
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
certificatePolicies
Policy: X509v3 Any Policy Policy: 2.23.140.1.1
crlDistributionPoints
Full Name: URI:http://crl.sectigo.com/SectigoPublicServerAuthenticationRootR46.crl
authorityInfoAccess
CA Issuers - URI:http://crt.sectigo.com/SectigoPublicServerAuthenticationRootR46.p7c OCSP - URI:http://ocsp.sectigo.com
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US ST=New Jersey L=Jersey City O=The USERTRUST Network CN=USERTrust RSA Certification Authority
Issuer
C=US ST=New Jersey L=Jersey City O=The USERTRUST Network CN=USERTrust RSA Certification Authority
Valid from
2010-02-01T00:00:00+00:00
Expires
2038-01-18T23:59:59+00:00
Days remaining
4111
Serial (hex)
01FD6D30FCA3CA51A81BBC640E35032D
Signature
RSA-SHA384
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

E7:93:C9:B0:2F:D8:AA:13:E2:1C:31:22:8A:CC:B0:81:19:64:3B:74:9C:89:89:64:B1:74:6D:46:C3:D4:CB:D2
Certificate extensions & PEM
subjectKeyIdentifier
53:79:BF:5A:AA:2B:4A:CF:54:80:E1:D8:9B:C0:9D:F2:B2:03:66:CB
keyUsage
Certificate Sign, CRL Sign
basicConstraints
CA:TRUE
-----BEGIN CERTIFICATE-----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ATiUFJVDBwn7YKnuHKsSjKCaXqeYalltiz8I+8jRRa8YFWSQEg9zKC7F4iRO/Fjs
8PRF/iKz6y+O0tlFYQXBl2+odnKPi4w2r78NBc5xjeambx9spnFixdjQg3IM8WcR
iQycE0xyNN+81XHfqnHd4blsjDwSXWXavVcStkNr/+XeTWYRUc+ZruwXtuhxkYze
Sf7dNXGiFSeUHM9h4ya7b6NnJSFd5t0dCy5oGzuCr+yDZ4XUmFF0sbmZgIn/f3gZ
XHlKYC6SQK5MNyosycdiyA5d9zZbyuAlJQG03RoHnHcAP9Dc1ew91Pq7P8yF1m9/
qS3fuQL39ZeatTXaw2ewh0qpKJ4jjv9cJ2vhsE/zB+4ALtRZh8tSQZXq9EfX7mRB
VXyNWQKV3WKdwrnuWih0hKWbt5DHDAff9Yk2dDLWKMGwsAvgnEzDHNb842m1R0aB
L6KCq9NjRHDEjf8tM7qtj3u1cIiuPhnPQCjY/MiQu12ZIvVS5ljFH4gxQ+6IHdfG
jjxDah2nGN59PRbxYvnKkKj9
-----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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