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 somt.cz
Hostname mismatch- Issued by (CA)
- Let's Encrypt
- Subject
- bedrnik.eu
- Valid from
- Jun 8, 2026
- Valid until
- Sep 6, 2026 (45 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06124954F1C5036854CD1C696C8B49C06FF4
- SHA-256 fingerprint
- A5:A1:C6:D4:3B:C7:58:66:BD:57:0A:90:C4:4E:6C:A6:9C:C5:FC:7F:1A:BF:A1:38:89:8D:C3:87:B2:70:A5:CE
- 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.
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Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
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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