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 r-nic.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- r-nic.de
- Valid from
- Sep 4, 2026
- Valid until
- Dec 3, 2026 (67 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06064C9C637D44EF231E275E5ACA4B320EA9
- SHA-256 fingerprint
- 90:66:08:CF:9C:4D:9F:22:59:59:59:89:55:C9:5A:DE:B0:56:FD:84:58:0E:01:73:00:4E:0D:72:4F:7A:B8:D5
- Chain
- YR2 → Root YR → ISRG Root X1
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 Sep 3, 2026.
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This is today's certificate. Turn on monitoring and we'll watch r-nic.de continuously, notifying you the moment anything moves across all three signals:
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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