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 gp-one.at

Valid
Issued by (CA)
DigiCert Inc
Subject
gp-one.at
Valid from
May 24, 2026
Valid until
Dec 8, 2026 (128 days remaining)
Public key
RSA 2048-bit
Serial
0FDB24B2ED28BFA671C52E6C5693EEF0
SHA-256 fingerprint
A4:88:42:2C:C7:C7:5A:47:88:A1:23:DC:04:90:8E:C2:6F:C5:DA:94:AE:11:9D:B7:0E:01:F2:46:C8:26:A2:5B
Chain
Encryption Everywhere DV TLS CA - G2 → DigiCert Global Root G2
Subject Alternative Names (2)
gp-one.at, www.gp-one.at

Certificate Authority Authorization (CAA)

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

Never get surprised by gp-one.at's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch gp-one.at 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.