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 refa-ag.de

Valid
Issued by (CA)
DigiCert Inc
Subject
refa-ag.de
Valid from
Apr 23, 2026
Valid until
Nov 7, 2026 (90 days remaining)
Public key
RSA 2048-bit
Serial
0B9C2E8F5CF3DA902FE2284EF15D1D4E
SHA-256 fingerprint
22:E6:7A:FF:BC:4B:C6:58:CD:36:F2:EC:C7:D5:54:80:96:CE:D2:8B:8C:0C:62:48:4E:22:2D:32:F4:17:ED:3E
Chain
Encryption Everywhere DV TLS CA - G2 → DigiCert Global Root G2
Subject Alternative Names (2)
refa-ag.de, www.refa-ag.de

Certificate Authority Authorization (CAA)

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

Never get surprised by refa-ag.de's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch refa-ag.de 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.