SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
komar-ftp.de
SSL/TLS Certificate
SSL/TLS Certificate for komar-ftp.de
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- komar-ftp.de
- Valid from
- Dec 8, 2023
- Valid until
- Mar 7, 2024 (expired 936 days ago)
- Public key
- RSA 4096-bit
- Serial
- 0321985FCF12465ABE61B13F0FC4C19E0AD6
- SHA-256 fingerprint
- 5A:E0:8F:D0:B2:94:05:24:13:AE:1D:2E:D0:56:9F:31:48:7F:5A:A2:FA:76:D3:D5:04:D0:84:E5:D5:CA:19:6E
- Chain
- R3 → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by komar-ftp.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch komar-ftp.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.