SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
id-karta.cz
SSL/TLS Certificate
SSL/TLS Certificate for id-karta.cz
Expiring soon- Issued by (CA)
- ZeroSSL GmbH
- Subject
- id-karta.cz
- Valid from
- May 7, 2026
- Valid until
- Aug 5, 2026 (4 days remaining)
- Public key
- EC 256-bit
- Serial
- 4BB939D30519AF506AC0D8DE3839BDD6
- SHA-256 fingerprint
- 2E:78:09:8E:46:1B:80:92:A4:3E:98:54:E7:52:AB:E8:AE:E3:E3:63:CD:EC:5A:8D:81:A1:9C:DB:60:56:58:1F
- Chain
- ZeroSSL ECC DV SSL CA 2 → Sectigo Public Server Authentication Root E46 → USERTrust ECC Certification Authority
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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