SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for b-u-n.de
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- *.b-u-n.de
- Valid from
- Feb 11, 2026
- Valid until
- Feb 25, 2027 (193 days remaining)
- Public key
- RSA 2048-bit
- Serial
- BC786B171AA4823AE546C9CE2BFFEBE3
- SHA-256 fingerprint
- 4A:C7:AA:6B:52:D1:E2:81:78:0F:E5:1A:6B:04:54:8D:0B:B9:8A:34:59:73:0D:DA:CC:FC:32:63:1F:8F:E0:15
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by b-u-n.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch b-u-n.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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