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 drgoodfellow.com

Expired
Issued by (CA)
Sectigo Limited
Subject
drgoodfellow.com
Valid from
Jun 20, 2020
Valid until
Jun 20, 2021 (expired 1943 days ago)
Public key
RSA 2048-bit
Serial
B1351A6E44A7C7EDD53C640D3B20DF26
SHA-256 fingerprint
EB:44:BA:CD:D1:37:E2:52:A5:2F:D1:CE:B6:ED:D7:2A:BE:B3:15:15:5B:22:F0:4D:3F:2D:3F:52:9B:9B:7B:5A
Chain
Sectigo RSA Domain Validation Secure Server CA → USERTrust RSA Certification Authority
Subject Alternative Names (2)
drgoodfellow.com, www.drgoodfellow.com

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 Oct 7, 2026.

Never get surprised by drgoodfellow.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch drgoodfellow.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.