SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
geyer-hosaja.com.pl
SSL/TLS Certificate
SSL/TLS Certificate for geyer-hosaja.com.pl
Untrusted chain- Issued by (CA)
- Asseco Data Systems S.A.
- Subject
- *.geyer-hosaja.com.pl
- Valid from
- Oct 14, 2026
- Valid until
- May 1, 2027 (168 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 4AABB6447DCAADEEB44761CA0BF78B34
- SHA-256 fingerprint
- 05:49:1B:1E:8F:99:01:C1:6B:3F:8B:F7:03:AA:9E:AF:EF:FA:BC:BE:14:97:73:6F:F5:2C:E5:12:30:A1:9A:CE
- Chain
- —
Certificate Authority Authorization (CAA)
CAA restricts issuance to certum.pl, globalsign.com; we couldn't map the serving CA (Asseco Data Systems S.A.) to one of these identifiers.
Never get surprised by geyer-hosaja.com.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, CNAME, TXT 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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