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 hombuch-lesefest.de

Expiring soon
Issued by (CA)
Let's Encrypt
Subject
hom-und-buch.de
Valid from
Jun 5, 2026
Valid until
Sep 3, 2026 (17 days remaining)
Public key
RSA 4096-bit
Serial
05BC2A2BF5746C9ADE996D5CBA7F0F8B4207
SHA-256 fingerprint
5F:2D:22:AF:05:6F:E1:E5:05:EE:52:C5:CE:F8:EC:75:59:86:85:A5:75:72:99:DE:D3:55:44:AC:57:B1:F4:14
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (6)
*.hom-und-buch.de, *.hombuch-lesefest.de, *.hombuch.de, hom-und-buch.de, hombuch-lesefest.de, hombuch.de

Certificate Authority Authorization (CAA)

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

Never get surprised by hombuch-lesefest.de's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch hombuch-lesefest.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.