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 c-g-s.de
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- c-g-s.de
- Valid from
- Nov 2, 2026
- Valid until
- May 19, 2027 (192 days remaining)
- Public key
- RSA 2048-bit
- Serial
- B814B6CFAFF72590958C1BB764F1C9AD
- SHA-256 fingerprint
- C5:EE:8C:86:98:2C:47:43:87:FF:9F:89:F2:2E:2D:85:03:7E:E5:A9:21:AA:D1:FC:82:D7:93:0B:B4:1B:35:46
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46
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, CNAME, TXT 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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