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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

TLSv1.2

taiwanmobile.com · 124.29.151.21:443

Verified
The certificate expires within 30 days.

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

Subject
C=TW ST=Taiwan L=Taipei O=Taiwan Mobile Co., Ltd. CN=*.taiwanmobile.com
Issuer
C=TW O=TAIWAN-CA CN=TWCA Secure SSL Certification Authority
Valid from
2026-03-26T08:43:12+00:00
Expires
2026-10-10T15:59:59+00:00
Days remaining
15
Serial (hex)
47EA0000000904E022F0F32F35077A7A
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.taiwanmobile.com, DNS:taiwanmobile.com

SHA-256 fingerprint

73:DD:D1:28:3A:D5:62:60:05:D5:E1:EB:C9:E2:D5:6B:06:1D:5B:51:ED:83:56:0E:EF:3E:C4:1D:73:F3:3B:43
Certificate extensions & PEM
authorityKeyIdentifier
92:E7:FA:62:16:71:8C:F3:97:71:42:C6:06:A7:E0:46:61:4B:5C:B6
subjectKeyIdentifier
54:92:94:4B:FD:66:6E:76:28:94:0D:5B:C7:B0:04:25:94:62:D6:0D:59:44:2A:5C:11:DC:74:9B:4C:D2:E2:17
crlDistributionPoints
Full Name: URI:http://sslserver.twca.com.tw/sslserver/Securessl_revoke_sha2_2023G3.crl
subjectAltName
DNS:*.taiwanmobile.com, DNS:taiwanmobile.com
authorityInfoAccess
CA Issuers - URI:http://sslserver.twca.com.tw/cacert/secure_sha2_2023G3.crt OCSP - URI:http://twcasslocsp.twca.com.tw/
certificatePolicies
Policy: 1.3.6.1.4.1.40869.1.1.21 CPS: https://www.twca.com.tw/ Policy: 2.23.140.1.2.2
basicConstraints
CA:FALSE
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : C2:31:7E:57:45:19:A3:45:EE:7F:38:DE:B2:90:41:EB: C7:C2:21:5A:22:BF:7F:D5:B5:AD:76:9A:D9:0E:52:CD Timestamp : Mar 26 08:43:13.815 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:54:9F:8E:57:92:11:4C:D1:A5:ED:5B:99: 04:8C:27:53:BF:EE:A4:8A:C4:1B:D1:B1:97:0A:88:90: B6:79:1B:4F:02:20:6D:13:0E:DA:AE:F7:C3:AD:90:E5: BF:59:9B:E9:67:AE:68:21:5A:5E:BD:42:74:23:C0:8D: C0:D0:B4:CE:18:20 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 94:4E:43:87:FA:EC:C1:EF:81:F3:19:24:26:A8:18:65: 01:C7:D3:5F:38:02:01:3F:72:67:7D:55:37:2E:19:D8 Timestamp : Mar 26 08:43:13.834 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:3B:50:DE:58:E9:80:B0:57:5A:C5:22:5E: 29:26:7B:E9:A7:72:84:61:CC:1B:EE:ED:A2:6D:53:96: 03:51:7C:20:02:21:00:E2:A9:56:46:FC:6A:F9:05:26: C1:95:27:CC:C2:0D:67:99:4F:F3:B2:FA:5A:43:3C:25: 60:57:13:7E:AE:0C:32 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : CB:38:F7:15:89:7C:84:A1:44:5F:5B:C1:DD:FB:C9:6E: F2:9A:59:CD:47:0A:69:05:85:B0:CB:14:C3:14:58:E7 Timestamp : Mar 26 08:43:13.884 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:A0:F3:C6:FA:9B:BA:CE:F4:4C:F1:7C: 9A:11:98:C8:B7:94:A4:01:C4:F2:D4:B9:D3:D5:0B:12: B6:2F:50:E9:A4:02:20:75:F2:F1:D0:FC:5B:41:DE:A7: B6:4D:98:69:FF:1B:26:68:69:B8:19:68:CF:C3:0D:8D: 52:FF:2F:A9:18:1B:95 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D8:09:55:3B:94:4F:7A:FF:C8:16:19:6F:94:4F:85:AB: B0:F8:FC:5E:87:55:26:0F:15:D1:2E:72:BB:45:4B:14 Timestamp : Mar 26 08:43:13.993 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:75:59:A3:23:41:75:7D:55:82:88:87:65: 35:79:84:E9:C8:57:02:C5:B1:7C:5D:C6:36:1C:03:83: F1:06:C1:FC:02:21:00:CF:95:78:B9:12:91:63:1A:9C: A3:0D:CA:84:B4:CB:46:2E:0A:FA:0D:02:0F:7E:29:D4: 0D:45:F5:5D:3F:58:7B
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES256-GCM-SHA384 · Checked 2026-09-24T16:59:29+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject
C=TW O=TAIWAN-CA CN=TWCA Secure SSL Certification Authority
Issuer
C=TW O=TAIWAN-CA OU=Root CA CN=TWCA Global Root CA
Valid from
2023-10-16T09:01:04+00:00
Expires
2030-10-16T15:59:59+00:00
Days remaining
1482
Serial (hex)
400134B3680000000000000CD0AA08EC
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

1A:2C:75:FD:09:6E:04:99:E9:FF:6A:C7:4E:52:6F:61:EA:AE:3E:DF:C8:C2:EA:44:36:FE:E0:C2:4D:8B:7D:0E
Certificate extensions & PEM
authorityKeyIdentifier
48:DB:CD:DE:8E:E9:49:72:5A:88:E8:B1:D8:3D:07:B3:B9:6B:66:50
subjectKeyIdentifier
92:E7:FA:62:16:71:8C:F3:97:71:42:C6:06:A7:E0:46:61:4B:5C:B6
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
certificatePolicies
Policy: 1.3.6.1.4.1.40869.1.1.21 CPS: https://www.twca.com.tw/ Policy: 2.23.140.1.2.2
crlDistributionPoints
Full Name: URI:http://rootca.twca.com.tw/TWCARCA/global_revoke_4096.crl
basicConstraints
CA:TRUE, pathlen:0
authorityInfoAccess
CA Issuers - URI:http://sslserver.twca.com.tw/cacert/root4096.crt OCSP - URI:http://rootocsp.twca.com.tw/
-----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.

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