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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

teknotel.com · 213.144.123.125:443

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=*.teknotel.com
Issuer
C=GB O=Sectigo Limited CN=Sectigo Public Server Authentication CA DV R36
Valid from
2026-07-06T00:00:00+00:00
Expires
2027-01-20T23:59:59+00:00
Days remaining
119
Serial (hex)
A5476B5E39B08734DA0F03025140A579
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:*.teknotel.com, DNS:teknotel.com

SHA-256 fingerprint

C5:76:CB:14:FE:E0:79:58:14:42:38:0C:90:F4:49:32:8C:00:4D:25:DD:EE:8A:B6:34:63:51:6D:D3:32:A9:83
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
20:A5:AC:39:BC:98:56:EE:20:54:54:23:D4:6A:D0:EC:D2:F4:00:8D
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:*.teknotel.com, DNS:teknotel.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 : Jul 6 13:32:13.432 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:F3:D5:47:07:A4:3C:46:EC:A8:62:8E: 44:FF:A8:F6:87:36:87:43:6A:49:A9:F9:B7:E8:F4:4C: 33:78:1F:FE:57:02:20:08:12:CB:6F:7C:14:E4:8A:E8: E7:F6:B7:A7:46:EC:53:48:61:67:E8:A2:78:A6:1E:BA: E8:B0:BF:AF:21:D9:AF 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 : Jul 6 13:32:14.255 2026 GMT Extensions: 00:00:05:00:05:54:B4:11 Signature : ecdsa-with-SHA256 30:45:02:20:54:30:30:C6:94:EA:3F:A3:36:26:4C:4C: DE:9A:7E:77:E8:B9:A6:E9:47:BD:2F:CE:BC:57:99:03: 71:43:08:75:02:21:00:81:5C:87:51:63:0A:D8:56:C4: 5C:B6:24:99:A0:88:DD:1B:10:22:C9:29:11:69:4D:C0: 56:FD:F8:3C:BB:B3:FE Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 59:6E:6C:33:86:94:B2:59:72:A2:56:C8:A0:E8:DD:90: 4A:76:E8:08:3D:DA:87:3B:01:08:38:28:14:3C:EE:59 Timestamp : Jul 6 13:32:13.630 2026 GMT Extensions: 00:00:05:00:00:46:57:F3 Signature : ecdsa-with-SHA256 30:45:02:21:00:9F:3C:16:30:FA:36:0A:E3:CE:0E:CB: 51:54:30:26:53:A4:1B:4C:37:86:9B:9F:E1:EF:40:CF: C3:BC:DD:29:75:02:20:05:C2:DE:D5:24:FB:A3:CF:47: BA:4C:91:52:DF:72:DF:2C:DD:E1:57:A7:8B:3B:16:06: 9E:6B:A4:BB:58:03:8C
-----BEGIN CERTIFICATE-----
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vrhbAtbazychqxYYbKeFwVOz2IFZElQL
-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-09-23T17:56:49+00:00

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

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