SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
f-zone.net
SSL/TLS Certificate
SSL/TLS Certificate for f-zone.net
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- f-zone.net
- Valid from
- Oct 8, 2026
- Valid until
- Jan 6, 2027 (58 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06252C4F65EE43C0A17991C0D33660C4B2A4
- SHA-256 fingerprint
- BC:50:37:96:41:EF:A8:9F:76:C7:5D:18:CC:31:9A:B3:9E:EF:95:6A:73:C1:E8:9A:C9:33:0F:91:5B:21:BE:91
- 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.
We've observed 1 previous certificate for this host. This certificate has been served since Oct 11, 2026.
Never get surprised by f-zone.net's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch f-zone.net 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.