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
Establishing secure TLS connection…
Analysing certificate transparency records for
Live certificate handshake & validation
Retrieving full issuance history from CT logs
Analysing certificates & compiling intelligence
Live certificate available in ~3s • complete history may take up to 40s
luckobserver.de
Certificate Transparency • 9 certs found
C
Fair
9
Total
3
Active
6
Expired
1
Hosts
4
Issuers
⚠ 2 certs expiring within 30 days
Last issued 2026-09-03
Certificate Authorities
4 unique
C=US, O=Let's Encrypt, CN=YE1
3 (33.3%)
C=US, O=Let's Encrypt, CN=E8
2 (22.2%)
C=US, O=Let's Encrypt, CN=E7
2 (22.2%)
C=US, O=Let's Encrypt, CN=R12
2 (22.2%)
Key Algorithms
avg 0.2yr lifespan
RSA
2 (22%)
ECDSA
7 (78%)
Cert lifespan distribution
≤1yr
9
Discovered Hostnames
1 unique
luckobserver.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 |
|---|---|---|---|---|
| luckobserver.de | 2026-10-02 | 5d | ECDSA 256 | |
| luckobserver.de | 2026-10-02 | 5d | ECDSA 256 | |
| luckobserver.de | 2026-12-02 | 66d | ECDSA 256 |
No certificates match the current filter.