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 land.nrw
Valid- Issued by (CA)
- Deutsche Telekom Security GmbH
- Subject
- land.nrw
- Valid from
- Jun 26, 2026
- Valid until
- Jan 9, 2027 (164 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 1F431A722DB21EB1C0E6EA19EB9FDA5E
- SHA-256 fingerprint
- 62:81:FC:19:50:CB:19:2B:46:D5:4B:1B:2E:76:C9:D2:06:AE:C3:40:21:34:63:68:0E:A2:AD:78:A0:45:D9:33
- Chain
- Telekom Security OV RSA CA 26A → Telekom Security TLS RSA Root 2023
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 Jul 28, 2026.
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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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