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

schoeneform.de · 45.56.70.77:443

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=TH ST=Mertzใต้ L=Martaใต้ CN=localhost
Issuer
C=TH ST=Mertzใต้ L=Martaใต้ CN=localhost
Valid from
2021-04-21T04:37:39+00:00
Expires
2027-09-02T04:37:39+00:00
Days remaining
331
Serial (hex)
A1A4DAAF2E72A49E
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

C5:24:B6:0D:72:E5:EF:4E:6D:A8:BB:50:50:09:00:25:8A:69:41:F3:96:AC:3E:47:6B:09:F4:D2:8A:1F:7A:48
Certificate extensions & PEM
subjectKeyIdentifier
B1:3E:91:E7:68:DB:B2:0C:F3:59:5C:0E:9C:42:9A:DD:15:A1:29:60
authorityKeyIdentifier
B1:3E:91:E7:68:DB:B2:0C:F3:59:5C:0E:9C:42:9A:DD:15:A1:29:60
basicConstraints
CA:TRUE
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-05T15:45:53+00:00

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

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