SSL/TLS Certificate Lookup

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

herno.company

SSL/TLS Certificate

Whois RDAP DNS Records Certificate Uptime Diagnostics History Hide Contact Info

SSL/TLS Certificate for herno.company

Expired

Issued by (CA): DigiCert Inc
Subject: herno.it
Valid from: Apr 21, 2020
Valid until: May 21, 2022 (expired 1523 days ago)
Public key: RSA 2048-bit
Serial: 02B948DDC0E8E186EA255C626B53F956
SHA-256 fingerprint: 28:82:AF:BD:F3:08:A6:2E:72:BB:24:FC:F9:D6:D9:2B:46:9B:04:8E:50:EB:E8:8A:87:31:36:09:2B:E7:79:9C
Chain: —

Subject Alternative Names (26)

herno.be, herno.biz, herno.com, herno.fi, herno.fr, herno.it, herno.jp, herno.lu, herno.org, herno.pl, herno.ro, herno.uk, herno.us, www.herno.be, www.herno.biz, www.herno.com, www.herno.fi, www.herno.fr, www.herno.it, www.herno.jp, www.herno.lu, www.herno.org, www.herno.pl, www.herno.ro, www.herno.uk, www.herno.us

Certificate Authority Authorization (CAA)

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

Never get surprised by herno.company's certificate expiring

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