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 bus-seat.com

Valid
Issued by (CA)
Asseco Data Systems S.A.
Subject
www.bus-seat.com
Valid from
Dec 25, 2025
Valid until
Jan 24, 2027 (169 days remaining)
Public key
RSA 2048-bit
Serial
4371977540EFAE649DC8EFBF8AD00A39
SHA-256 fingerprint
05:F5:EB:33:F8:84:17:A0:A7:71:E9:6B:55:2A:E5:6C:DC:C7:24:36:3C:72:A8:F7:7D:4A:5A:0C:AC:FA:CF:F2
Chain
Certum DV TLS G2 R39 CA → Certum Trusted Root CA → Certum Trusted Network CA
Subject Alternative Names (2)
bus-seat.com, www.bus-seat.com

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

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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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