SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
selk-w.de
SSL/TLS Certificate
SSL/TLS Certificate for selk-w.de
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- *.selk-w.de
- Valid from
- May 4, 2026
- Valid until
- Nov 14, 2026 (102 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 7D5BE18E51ED47E374B64082B9D2096C
- SHA-256 fingerprint
- FB:0F:11:AF:7B:BD:B1:D1:2E:E8:0F:21:8F:53:2F:2C:34:70:72:22:25:A7:DA:3E:CB:00:88:92:E1:DA:A7:2C
- 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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