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

mx110.telegram.org · 149.154.162.247:443

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=adm204
Issuer
CN=adm204
Valid from
2024-12-05T11:25:57+00:00
Expires
2034-12-03T11:25:57+00:00
Days remaining
2973
Serial (hex)
05A9661147F9A8E813867870E21D7874052E6D35
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:adm204

SHA-256 fingerprint

0C:BC:AB:89:91:8A:8D:5B:74:86:C2:1F:72:3C:58:9D:1E:80:74:7B:02:BE:56:43:82:1E:BA:74:D9:B5:A9:96
Certificate extensions & PEM
basicConstraints
CA:FALSE
subjectAltName
DNS:adm204
subjectKeyIdentifier
3B:88:6A:7D:7C:2F:27:7A:CA:C2:B6:1F:CE:B5:26:A9:FC:81:9F:84
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-12T14:29:53+00:00

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

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