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 jet-hi.com

Hostname mismatch
Issued by (CA)
DigiCert Inc
Subject
www.phillips66.co.uk
Valid from
Jan 23, 2026
Valid until
Feb 17, 2027 (165 days remaining)
Public key
RSA 2048-bit
Serial
04C5CC340C4E23D30A85374D0B7C485F
SHA-256 fingerprint
04:12:8A:94:B1:48:A4:4D:F8:A6:69:25:C3:F7:B8:7F:2E:68:30:48:42:2A:B5:37:03:89:E3:C2:68:66:B7:F7
Chain
DigiCert Global G2 TLS RSA SHA256 2020 CA1 → DigiCert Global Root G2
Subject Alternative Names (2)
phillips66.co.uk, www.phillips66.co.uk

Certificate Authority Authorization (CAA)

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

Never get surprised by jet-hi.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch jet-hi.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, 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.

Monitor this certificate free

Free for your first domain: uptime, DNS, and certificate together. No credit card.