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 it-f.jp
Valid- Issued by (CA)
- Google Trust Services
- Subject
- it-f.jp
- Valid from
- Sep 29, 2026
- Valid until
- Dec 28, 2026 (52 days remaining)
- Public key
- EC 256-bit
- Serial
- EFFC6DBF8B1075600E34862AB4943272
- SHA-256 fingerprint
- E5:1E:CA:53:96:19:46:BD:8D:24:D3:03:27:22:9D:E1:1E:85:97:AF:0E:07:8B:89:C9:BD:C2:11:4F:D7:C6:B0
- Chain
- WE1 → GTS Root R4
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by it-f.jp's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch it-f.jp 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.
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