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 jsmed.pl
Expiring soon- Issued by (CA)
- Sectigo Limited
- Subject
- jsmed.pl
- Valid from
- Dec 31, 2025
- Valid until
- Oct 6, 2026 (7 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 2945B65B0ADCDD74957AE8546AE5DFAE
- SHA-256 fingerprint
- 17:F7:63:B6:5C:42:07:BA:FE:85:F2:E4:0B:BD:10:CA:2F:27:7D:F3:E4:3E:94:13:8E:44:4D:EF:1E:C0:5C:2F
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA 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
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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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