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 con-t.pl
Valid- Issued by (CA)
- Asseco Data Systems S.A.
- Subject
- con-t.pl
- Valid from
- Apr 1, 2026
- Valid until
- Oct 17, 2026 (36 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 56ADDC20F7B43CCE72D569750120B89D
- SHA-256 fingerprint
- 5A:00:67:A6:69:A8:C3:D5:27:F2:53:1F:AC:1C:B4:76:4C:C1:A9:DA:3D:97:EC:47:58:7B:D4:DF:9C:FE:E7:6D
- Chain
- Certum DV TLS G2 R39 CA → Certum Trusted Root CA
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by con-t.pl's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch con-t.pl 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, 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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