SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
modry-petr.cz
SSL/TLS Certificate
SSL/TLS Certificate for modry-petr.cz
Valid- Issued by (CA)
- Actalis S.p.A.
- Subject
- *.modry-petr.cz
- Valid from
- Aug 4, 2026
- Valid until
- Feb 19, 2027 (195 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 78BB58305D59B1E6ACC0FB9AB93863DA
- SHA-256 fingerprint
- 01:7C:58:EF:E6:CF:FC:96:17:B2:BD:B7:05:E8:C0:BC:98:E7:A8:60:4B:D7:6A:E4:AE:93:E0:51:39:F0:5F:C3
- Chain
- Actalis Domain Validated TLS Server RSA CA 2025 → Actalis TLS Server RSA Root CA 2025 → Actalis Authentication Root CA
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by modry-petr.cz's certificate expiring
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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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