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 lemon.co.jp

Valid
Issued by (CA)
Japan Registry Services Co., Ltd.
Subject
www.lemon.co.jp
Valid from
Nov 30, 2025
Valid until
Dec 31, 2026 (153 days remaining)
Public key
RSA 2048-bit
Serial
23C8CF999FF4093F5DF6C7911A915540
SHA-256 fingerprint
18:DE:C5:FC:EF:8D:FD:F3:B1:87:8B:E4:25:0F:72:3F:4E:5C:14:A9:BE:3D:34:5D:93:4A:DB:E8:C1:00:2F:D1
Chain
JPRS Domain Validation Authority - G4
Subject Alternative Names (2)
lemon.co.jp, www.lemon.co.jp

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

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This is today's certificate. Turn on monitoring and we'll watch lemon.co.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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