SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
svitzlin.cz
SSL/TLS Certificate
SSL/TLS Certificate for svitzlin.cz
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- *.svitzlin.cz
- Valid from
- Sep 6, 2025
- Valid until
- Dec 5, 2025 (expired 239 days ago)
- Public key
- EC 384-bit
- Serial
- 06117DA2266F257279EA6D40939468F8E3F5
- SHA-256 fingerprint
- 0A:8F:D7:51:F7:CB:A2:71:21:1B:D4:5E:6E:A7:A1:03:6A:1F:03:A8:FA:E1:DC:61:51:BF:5B:72:9F:EA:18:54
- Chain
- E8 → 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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