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 mertgen-bau.com

Self-signed
Issued by (CA)
Plesk
Subject
Plesk
Valid from
Jan 7, 2019
Valid until
Jan 7, 2020 (expired 2411 days ago)
Public key
RSA 2048-bit
Serial
5C334970
SHA-256 fingerprint
4B:5C:C9:6A:73:E0:0F:D0:59:75:04:A7:67:C9:BB:CF:57:BF:DB:20:7E:BA:3F:9C:CD:75:71:04:89:AE:B5:25
Chain
Plesk

Certificate Authority Authorization (CAA)

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

Never get surprised by mertgen-bau.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch mertgen-bau.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.