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 der-heidkrug.de

Valid
Issued by (CA)
Let's Encrypt
Subject
der-heidkrug.de
Valid from
Oct 4, 2026
Valid until
Jan 2, 2027 (54 days remaining)
Public key
RSA 4096-bit
Serial
06988FDAD87EFF00A45AFAB830AB2AAF2E1B
SHA-256 fingerprint
1A:12:C5:09:41:4A:42:BF:1F:43:46:C4:C7:E9:06:35:E7:D3:92:C4:90:79:B6:C4:E4:E7:2A:5F:DF:C5:B3:91
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (2)
der-heidkrug.de, www.der-heidkrug.de

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 Nov 6, 2026.

Never get surprised by der-heidkrug.de's certificate expiring

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