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

spam.taipeinet.com.tw · 106.105.105.250:443

Unverified
Certificate verification failed. These are unverified certificate details presented by the server. SSL operation failed with code 1. OpenSSL Error messages: error:0A000086:SSL routines::certificate verify failed

Certificate verification failed

Subject
CN=*.taipeinet.com.tw
Issuer
C=GB O=Sectigo Limited CN=Sectigo Public Server Authentication CA DV R36
Valid from
2026-10-05T00:00:00+00:00
Expires
2027-04-21T23:59:59+00:00
Days remaining
163
Serial (hex)
59627BF1F79EFDD630048A7DB72E91B5
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.taipeinet.com.tw, DNS:taipeinet.com.tw

SHA-256 fingerprint

4E:01:DC:42:EC:11:7F:C2:B1:06:24:63:AE:01:CD:FE:75:84:EE:06:94:DD:50:08:5C:F9:BE:9D:F6:E3:C3:A7
Certificate extensions & PEM
authorityKeyIdentifier
68:C0:12:16:18:0E:AF:CE:F6:87:A6:32:57:A3:46:51:5D:CB:07:27
subjectKeyIdentifier
2A:BE:59:41:2D:23:BE:7E:52:8A:05:B0:D6:67:78:09:3B:F9:3A:6C
keyUsage
Digital Signature, Key Encipherment
basicConstraints
CA:FALSE
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
certificatePolicies
Policy: 1.3.6.1.4.1.6449.1.2.2.7 CPS: https://sectigo.com/CPS Policy: 2.23.140.1.2.1
authorityInfoAccess
CA Issuers - URI:http://crt.sectigo.com/SectigoPublicServerAuthenticationCADVR36.crt OCSP - URI:http://ocsp.sectigo.com
subjectAltName
DNS:*.taipeinet.com.tw, DNS:taipeinet.com.tw
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : ED:DA:EB:81:5C:63:21:34:49:B4:7B:E5:07:79:05:AB: D0:D9:31:47:C2:7A:C5:14:6B:3B:C5:8E:43:E9:B6:C7 Timestamp : Oct 5 09:00:22.513 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:40:D8:46:06:94:42:AE:BE:23:10:4E:60: CF:DB:EC:12:4E:B5:3E:76:D7:00:AA:0D:33:B6:1D:F6: 32:26:9B:29:02:20:63:E9:6B:B3:11:35:C7:32:B4:AF: DF:42:91:6F:7A:78:D8:87:5E:03:60:4C:8D:5F:E6:ED: C3:ED:F2:64:59:97 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 5 09:00:22.651 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:80:DC:DF:D6:D2:36:9E:CD:C0:06:3D: 4E:F1:C1:1D:77:5F:FB:70:2D:7B:97:FE:9B:1F:CA:2F: DB:21:CC:6E:4A:02:21:00:F1:3D:C8:81:BA:35:A5:8A: 37:77:49:9B:C1:93:EF:0B:8A:84:42:B9:F2:E8:4D:04: 40:D9:1B:05:9E:9D:4D:FD Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 8E:CA:47:0B:AC:DE:6A:F3:A2:06:B0:A4:7A:84:B7:46: FE:1F:C6:BF:95:3E:25:E6:9B:4E:E4:02:48:F3:C6:E8 Timestamp : Oct 5 09:00:22.862 2026 GMT Extensions: 00:00:05:00:1C:9B:E4:52 Signature : ecdsa-with-SHA256 30:45:02:21:00:C1:42:D5:88:6F:DA:58:0B:FD:34:1D: F4:E9:DC:9E:56:0E:39:FA:EE:9F:74:40:19:CF:31:23: 09:D9:D3:F1:7D:02:20:0F:D7:FB:2C:D3:97:3F:D7:DC: 66:3E:C0:7D:54:D0:4A:A9:F1:54:7B:FE:9F:89:E7:37: 15:39:A8:A1:85:2D:3F
-----BEGIN CERTIFICATE-----
MIIGlzCCBP+gAwIBAgIQWWJ78fee/dYwBIp9ty6RtTANBgkqhkiG9w0BAQsFADBg
MQswCQYDVQQGEwJHQjEYMBYGA1UEChMPU2VjdGlnbyBMaW1pdGVkMTcwNQYDVQQD
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2kZfZ5+SeKUUYug=
-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-11-09T10:08:09+00:00

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

View certificate JSON

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