SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
1fach-gesund.de
SSL/TLS Certificate
SSL/TLS Certificate for 1fach-gesund.de
Expiring soon- Issued by (CA)
- Let's Encrypt
- Subject
- 1fach-gesund.de
- Valid from
- Aug 13, 2026
- Valid until
- Nov 11, 2026 (4 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 0507F758615D84DD1D0F4662F3CF2647445D
- SHA-256 fingerprint
- 24:72:8A:5A:22:63:65:E1:CD:A4:02:B9:F0:58:0C:E0:E4:9F:A4:08:D5:44:97:03:2E:12:F5:89:8A:12:E2:7B
- Chain
- YR1 → Root YR → ISRG Root X1
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 Sep 6, 2026.
Never get surprised by 1fach-gesund.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch 1fach-gesund.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, 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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.