SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

active-pcb.com

SSL/TLS Certificate

Whois RDAP DNS Records Certificate Uptime Diagnostics History Hide Contact Info

SSL/TLS Certificate for active-pcb.com

Untrusted chain

Issued by (CA): Sectigo Limited
Subject: *.active-pcb.com
Valid from: Apr 7, 2026
Valid until: Oct 22, 2026 (73 days remaining)
Public key: RSA 4096-bit
Serial: 4F6F22CA0504220C499DA256133D9102
SHA-256 fingerprint: 12:5F:D0:9F:20:20:59:C2:01:16:26:CD:59:36:88:7A:3F:4D:3F:D4:22:79:2F:A3:45:EE:FD:6F:AD:EF:2D:9C
Chain: —

Subject Alternative Names (2)

*.active-pcb.com, active-pcb.com

Certificate Authority Authorization (CAA)

The serving CA (Sectigo Limited) is not among the authorities this domain's CAA records authorize (comodoca.com, letsencrypt.org). This can indicate a misconfiguration or an unexpected issuance.

Never get surprised by active-pcb.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch active-pcb.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.