SSL/TLS Certificate Lookup

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

ec2-63-183-108-254.eu-central-1.compute.amazonaws.com

SSL/TLS Certificate

SSL/TLS Certificate for ec2-63-183-108-254.eu-central-1.compute.amazonaws.com

Hostname mismatch
Issued by (CA)
Amazon
Subject
www.gewkoelnag.de
Valid from
Dec 28, 2025
Valid until
Jan 26, 2027 (176 days remaining)
Public key
RSA 2048-bit
Serial
0E32CAC6927E2F856DD5D7E725AE9770
SHA-256 fingerprint
29:4C:96:3F:6A:99:A0:99:83:5F:40:07:55:29:AF:CA:B9:79:BB:F8:F5:1F:9B:26:77:12:0B:F4:71:C6:C8:C6
Chain
Amazon RSA 2048 M04 → Amazon Root CA 1 → Starfield Services Root Certificate Authority - G2
Subject Alternative Names (1)
www.gewkoelnag.de

Certificate Authority Authorization (CAA)

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

Never get surprised by ec2-63-183-108-254.eu-central-1.compute.amazonaws.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch ec2-63-183-108-254.eu-central-1.compute.amazonaws.com 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.