SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
123-nabytek.cz
SSL/TLS Certificate
SSL/TLS Certificate for 123-nabytek.cz
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- 123nabytek.cz
- Valid from
- Jun 4, 2026
- Valid until
- Sep 2, 2026 (29 days remaining)
- Public key
- EC 256-bit
- Serial
- 06BE4A7B8F804F623335807D2E9224232CE9
- SHA-256 fingerprint
- 71:25:18:CA:E6:05:FB:63:C0:80:45:43:5B:0A:7E:89:5A:B9:FE:EA:E8:F8:CD:1A:D3:A1:98:E1:34:E0:8D:65
- Chain
- YE1 → Root YE → ISRG Root X2 → 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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