SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ph-muenster.de
SSL/TLS Certificate
SSL/TLS Certificate for ph-muenster.de
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- *.ph-muenster.de
- Valid from
- Nov 4, 2025
- Valid until
- Nov 18, 2026 (105 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 585300CDD6B88E7A2C1B835C23A66DEC
- SHA-256 fingerprint
- 28:17:1A:A0:8D:9F:8C:E1:8A:1C:27:1D:E7:C3:34:F4:67:2E:F6:8E:4F:24:48:D3:48:9F:AD:F3:CC:17:08:2F
- 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.
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Uptime
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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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