SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
dziekanat-wsbw.pl
SSL/TLS Certificate
SSL/TLS Certificate for dziekanat-wsbw.pl
Valid- Issued by (CA)
- cyber_Folks S.A.
- Subject
- dziekanat-wsbw.pl
- Valid from
- Sep 15, 2025
- Valid until
- Sep 15, 2026 (36 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 79C98816CBC22B39275DC07628EAB97B
- SHA-256 fingerprint
- 0F:C1:FB:16:F0:16:35:2F:09:B4:F7:46:B0:A2:04:E7:50:F1:B8:5A:0C:E3:AA:E0:41:C9:FF:3D:8A:88:CA:93
- Chain
- cyber_Folks → Certum Global Services CA SHA2 → Certum Trusted Network CA
Certificate Authority Authorization (CAA)
CAA restricts issuance to certum.pl, letsencrypt.org; we couldn't map the serving CA (cyber_Folks S.A.) to one of these identifiers.
Never get surprised by dziekanat-wsbw.pl's certificate expiring
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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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