SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
gis-okinawa.jp
SSL/TLS Certificate
SSL/TLS Certificate for gis-okinawa.jp
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- gis-okinawa.jp
- Valid from
- Jul 9, 2026
- Valid until
- Oct 7, 2026 (61 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05661851386A65B4697B286E978B88B25312
- SHA-256 fingerprint
- 6F:DC:49:DC:40:99:9D:45:1D:07:A9:74:FE:54:BC:B8:3A:7C:80:EC:A9:0F:1D:AF:71:82:DF:FC:D6:9E:F7:8F
- 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.
Never get surprised by gis-okinawa.jp's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch gis-okinawa.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, 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.
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