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

dns.proen.co.th · 2400:ea00:c010:188:103:246:188:80:443

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
C=US ST=Someprovince L=Sometown O=none OU=none CN=localhost emailAddress=webmaster@localhost
Issuer
C=US ST=Someprovince L=Sometown O=none OU=none CN=localhost emailAddress=webmaster@localhost
Valid from
2022-05-23T08:27:43+00:00
Expires
2049-10-07T08:27:43+00:00
Days remaining
8396
Serial (hex)
C4FA661C698160E6
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

7C:2B:FB:7A:D0:D8:F8:12:DF:5E:76:51:1B:35:33:69:00:2F:7A:4F:D0:4F:9C:BC:C2:DB:EB:E1:30:EB:86:96
Certificate extensions & PEM
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-10-11T16:07:46+00:00

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

View certificate JSON

Registration / WHOIS →DNS records →