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

dns1.simbanet.net · 41.221.41.100:443

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=TZ ST=ar es Salaam L=Dar es Salaam O=SimbaNET OU=NOC CN=dns-master.simbanet.co.tz emailAddress=webmaster@simbanet.net
Issuer
C=TZ ST=ar es Salaam L=Dar es Salaam O=SimbaNET OU=NOC CN=dns-master.simbanet.co.tz emailAddress=webmaster@simbanet.net
Valid from
2011-09-08T03:19:53+00:00
Expires
2012-09-07T03:19:53+00:00
Days remaining
-5159
Serial (hex)
DF4FA4A082405E67
Signature
RSA-SHA1
Public key
RSA 1024

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

76:EC:6A:67:D2:83:4C:20:DE:95:AF:7A:6C:A4:96:45:0E:0A:13:25:AF:63:1E:FC:D8:13:53:F9:95:57:04:54
Certificate extensions & PEM
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-10-22T20:39:56+00:00

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

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