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

mail.prisma.net.bd · 124.6.224.16:443

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=qmail.redskybd.com
Issuer
CN=qmail.redskybd.com
Valid from
2015-07-30T09:15:19+00:00
Expires
2025-07-27T09:15:19+00:00
Days remaining
-453
Serial (hex)
800C67C6FCE418F6
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

91:5D:D3:A5:F7:7A:67:8D:54:B5:31:8B:CE:0A:C4:67:E3:E3:2E:4A:AD:76:98:86:0A:8A:06:6D:A0:DD:12:A5
Certificate extensions & PEM
basicConstraints
CA:FALSE
-----BEGIN CERTIFICATE-----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==
-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-10-23T03:06:21+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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