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 heilbad-heiligenstadt.de

Valid
Issued by (CA)
Let's Encrypt
Subject
heilbad-heiligenstadt.de
Valid from
Jul 2, 2026
Valid until
Sep 30, 2026 (43 days remaining)
Public key
EC 384-bit
Serial
055422C413CD9B68D00A7D12ACB4A105A7A6
SHA-256 fingerprint
5C:61:BD:F5:76:25:BB:AA:7A:F2:E2:A6:42:19:0E:B1:1B:D2:7A:CD:C3:D8:A9:16:A3:91:CE:59:85:08:A5:98
Chain
YE1 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (2)
heilbad-heiligenstadt.de, www.heilbad-heiligenstadt.de

Certificate Authority Authorization (CAA)

The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org, sectigo.com).

Never get surprised by heilbad-heiligenstadt.de's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch heilbad-heiligenstadt.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.