Certificate Transparency Logs

Every SSL/TLS certificate ever issued for a domain, sourced from public CT logs, use it for subdomain discovery, CA auditing and expiry monitoring.

Direct TLS probe (~3s) + full history via crt.sh • Includes subdomains • Results deduplicated

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Retrieving full issuance history from CT logs
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widecorner.de
Certificate Transparency
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widecorner.de
Certificate Transparency • 17 certs found
C
Fair
17
Total
3
Active
14
Expired
5
Hosts
5
Issuers
⚠  2 certs expiring within 30 days 82% of certificates are expired Last issued 2026-09-05
Certificate Authorities 5 unique
C=US, O=Let's Encrypt, CN=R12 6 (35.3%)
C=US, O=Let's Encrypt, CN=R13 4 (23.5%)
C=US, O=Let's Encrypt, CN=YE2 3 (17.6%)
C=US, O=Let's Encrypt, CN=E8 2 (11.8%)
C=US, O=Let's Encrypt, CN=E7 2 (11.8%)
Key Algorithms avg 0.2yr lifespan
RSA 10 (59%)
ECDSA 7 (41%)
Cert lifespan distribution
≤1yr
17
Discovered Hostnames
5 unique
gymsharkaudk.widecorner.de onjmqbpu.widecorner.de se.widecorner.de widecorner.de www.widecorner.de
Active Certificate Expiry Risk 3 active
2
≤ 7 days
Critical
67% of active
0
8–14 days
Warning
0
15–30 days
Caution
1
31–90 days
Monitor
33% of active
Expiring Soon 3 within 90 days
Common Name Expires Days Left Issuer (CA) Key
widecorner.de 2026-10-04 7d C=US, O=Let's Encrypt, CN=YE2 ECDSA 256
widecorner.de 2026-10-04 7d C=US, O=Let's Encrypt, CN=YE2 ECDSA 256
widecorner.de 2026-12-04 68d C=US, O=Let's Encrypt, CN=YE2 ECDSA 256
17 of 17
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