SSL/TLS Certificate Lookup

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

wi-bike.at

SSL/TLS Certificate

WhoisRDAPDNS RecordsCertificateUptimeDiagnosticsHistoryHide Contact Info

SSL/TLS Certificate for wi-bike.at

Hostname mismatch
Issued by (CA)
Let's Encrypt
Subject
admin2.netprofessionals.at
Valid from
Nov 5, 2026
Valid until
Feb 3, 2027 (82 days remaining)
Public key
RSA 2048-bit
Serial
0629D6A41DC400CEBF174B941E02DC523E83
SHA-256 fingerprint
67:60:4B:C7:85:ED:C8:C0:04:2B:15:EA:4B:7D:9C:D8:0D:9E:AF:2A:C2:DF:28:07:1F:79:F3:F3:A2:80:11:88
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (13)
admin2.netprofessionals.at, autoconfig.netprofessionals.at, autodiscover.netprofessionals.at, db01.netprofessionals.at, ftp.netprofessionals.at, imap.netprofessionals.at, ispconfig01.netprofessionals.at, mail01.netprofessionals.at, phpmyadmin.netprofessionals.at, pop3.netprofessionals.at, smtp.netprofessionals.at, web01.netprofessionals.at, webmail.netprofessionals.at

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 1, 2026.

Never get surprised by wi-bike.at's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch wi-bike.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.