SSL/TLS Certificate Lookup

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

plan-f.at

SSL/TLS Certificate

WhoisRDAPDNS RecordsCertificateUptimeDiagnosticsHistoryHide Contact Info

SSL/TLS Certificate for plan-f.at

Valid
Issued by (CA)
Let's Encrypt
Subject
plan-f.at
Valid from
Sep 24, 2026
Valid until
Dec 23, 2026 (42 days remaining)
Public key
RSA 2048-bit
Serial
05D913A9BCBFC693B6A6E79B2E696E4A346E
SHA-256 fingerprint
49:27:C5:50:2E:A0:9C:77:30:32:A0:FC:42:50:39:AC:EC:BE:E4:1C:9D:3A:4C:7F:74:2D:1A:CE:37:27:52:25
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (9)
cpanel.plan-f.at, cpcalendars.plan-f.at, cpcontacts.plan-f.at, ipv6.plan-f.at, mail.plan-f.at, plan-f.at, webdisk.plan-f.at, webmail.plan-f.at, www.plan-f.at

Certificate Authority Authorization (CAA)

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

Never get surprised by plan-f.at's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch plan-f.at continuously, notifying you the moment anything moves across all three signals:

Certificate monitor showing the issuer, expiry date, chain status, fingerprint, covered names, and a history of a rotation and an expiry warning

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, CNAME, TXT 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.