SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
konieczny-transport.com
SSL/TLS Certificate
SSL/TLS Certificate for konieczny-transport.com
Hostname mismatch- Issued by (CA)
- Asseco Data Systems S.A.
- Subject
- *.ipolska.info
- Valid from
- Feb 19, 2026
- Valid until
- Feb 19, 2027 (97 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 51112821C21F7EDC8F03605CB4E5D672
- SHA-256 fingerprint
- 51:C5:B1:82:4E:E0:1E:75:D9:84:F9:C0:73:EC:60:4D:4D:E8:48:86:3F:12:D1:91:BB:19:06:CF:82:9D:11:C1
- Chain
- Certum DV TLS G2 R39 CA → Certum Trusted Root CA → Certum Trusted Network CA
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Sep 18, 2026.
Never get surprised by konieczny-transport.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch konieczny-transport.com continuously, notifying you the moment anything moves across all three signals:
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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.