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

ext.douran.ir · 65.109.219.157:443

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 CN=company.test
Issuer
C=US CN=company.test
Valid from
2026-05-01T10:36:31+00:00
Expires
2030-05-02T10:36:31+00:00
Days remaining
1278
Serial (hex)
15466F4C33A1057B
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:company.test

SHA-256 fingerprint

90:25:9C:36:FA:DF:F7:6B:9D:90:6F:08:24:8D:1D:70:8D:18:2A:B4:46:E3:F8:BD:33:A1:86:89:AE:2B:05:69
Certificate extensions & PEM
subjectKeyIdentifier
B8:DC:BE:C7:94:CD:93:7C:D6:0E:DF:7B:C7:D0:00:0F:CE:49:AD:EA:7E:5C:72:7D:F8:76:95:D7:20:39:98:10
keyUsage
Digital Signature, Key Encipherment, Data Encipherment, Key Agreement, Certificate Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectAltName
DNS:company.test
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-31T19:56:58+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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