SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
pt-lab.de
SSL/TLS Certificate
SSL/TLS Certificate for pt-lab.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- ptlab.de
- Valid from
- Jul 15, 2026
- Valid until
- Oct 13, 2026 (66 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 05BAEFCCE1C3B0CD44664FDE38C4230F7272
- SHA-256 fingerprint
- 95:10:40:6D:F2:F6:16:A1:34:2D:CB:94:6B:B2:5B:31:74:B3:9D:60:55:63:EF:1E:7C:D9:C1:A1:58:B1:1B:23
- Chain
- YR2 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by pt-lab.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch pt-lab.de continuously, notifying you the moment anything moves across all three signals:
Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
DNS changes
We watch NS, MX, CAA, DNSSEC, CNAME and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.
TLS certificate
We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.
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