SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
bau-kompetenzzentrum.com
SSL/TLS Certificate
SSL/TLS Certificate for bau-kompetenzzentrum.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- kompetenzzentrum-bau.info
- Valid from
- Sep 2, 2026
- Valid until
- Dec 1, 2026 (55 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06753E2E5B9B8798B72B7805E63285A94488
- SHA-256 fingerprint
- 64:B4:D2:97:48:46:79:8A:83:F8:7C:19:30:08:30:52:F7:12:5F:88:EF:EF:3B:EB:E9:79:76:A4:D9:DE:3D:24
- 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.
This certificate has been served since Sep 30, 2026.
Never get surprised by bau-kompetenzzentrum.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch bau-kompetenzzentrum.com 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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.