SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
szkola-marzen.pl
SSL/TLS Certificate
SSL/TLS Certificate for szkola-marzen.pl
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- www.szkola-marzen.pl
- Valid from
- Oct 14, 2025
- Valid until
- Oct 14, 2026 (83 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 9202FF14AB8D442DE7F77184C26DB208
- SHA-256 fingerprint
- 1C:5B:00:1F:89:A4:B8:31:E8:6B:09:3E:75:0E:8A:46:68:65:4F:D2:8C:2E:03:03:0D:82:A8:B4:E3:33:7E:6D
- 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.
Never get surprised by szkola-marzen.pl'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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