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 1-nic.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- 1-nic.de
- Valid from
- Sep 11, 2026
- Valid until
- Dec 10, 2026 (49 days remaining)
- Public key
- EC 256-bit
- Serial
- 05BF5AACCE4F61502E1E74A8F31D44575E99
- SHA-256 fingerprint
- 75:28:06:95:A9:E9:8D:A5:89:22:B2:D7:37:79:5A:D4:F8:E2:69:53:1F:9D:B9:04:F5:29:85:76:3E:D9:32:4C
- Chain
- YE1 → Root YE → ISRG Root X2 → 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 6, 2026.
Never get surprised by 1-nic.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch 1-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, 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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