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

h2.internets.ru · 217.70.16.33:443

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
The certificate has expired.

Certificate verification failed

Subject
CN=localhost
Issuer
CN=localhost
Valid from
2016-07-25T10:12:01+00:00
Expires
2026-07-23T10:12:01+00:00
Days remaining
-95
Serial (hex)
D854CE45B453BC81
Signature
RSA-SHA256
Public key
RSA 1024

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

B7:54:A7:37:8F:7B:4F:59:CC:02:DA:8B:23:C0:99:83:0B:97:78:8A:C6:11:B5:C1:E4:B2:60:81:EA:67:88:DF
Certificate extensions & PEM
basicConstraints
CA:TRUE
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES256-GCM-SHA384 · Checked 2026-10-26T06:40:58+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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