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

esmtp.sxpress.com · 162.252.49.49:443

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
C=-- ST=SomeState L=SomeCity O=SomeOrganization OU=SomeOrganizationalUnit CN=esmtp.sxpress.com emailAddress=root@esmtp.sxpress.com
Issuer
C=-- ST=SomeState L=SomeCity O=SomeOrganization OU=SomeOrganizationalUnit CN=esmtp.sxpress.com emailAddress=root@esmtp.sxpress.com
Valid from
2017-01-17T22:45:21+00:00
Expires
2018-01-17T22:45:21+00:00
Days remaining
-3204
Serial (hex)
0F6E
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

32:C0:2E:90:9D:11:7A:35:EE:5A:EC:9D:69:C0:E4:8A:3B:53:ED:46:21:C1:22:2B:BD:3E:8A:90:00:B3:C9:25
Certificate extensions & PEM
basicConstraints
CA:FALSE
keyUsage
Digital Signature, Non Repudiation, Key Encipherment
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-10-26T22:05:04+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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