SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
1-2-diner.com
SSL/TLS Certificate
SSL/TLS Certificate for 1-2-diner.com
Hostname mismatch- Issued by (CA)
- Let's Encrypt
- Subject
- wartung.aoda-it.de
- Valid from
- Aug 14, 2026
- Valid until
- Nov 12, 2026 (65 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 064F37A43EF2997FD01865483520143687B8
- SHA-256 fingerprint
- 57:19:C4:54:9A:B1:24:C4:13:3B:99:41:89:13:D9:B5:A4:5C:6E:61:20:BD:C3:9E:E0:E9:4C:D8:14:12:10:F1
- Chain
- YR1 → Root YR → ISRG Root X1
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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