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 hagihara-clinic.jp

Valid
Issued by (CA)
Let's Encrypt
Subject
hagihara-clinic.jp
Valid from
Nov 11, 2026
Valid until
Feb 9, 2027 (85 days remaining)
Public key
RSA 2048-bit
Serial
05F3A800E4A1C120196A18AB87B53DBA8E72
SHA-256 fingerprint
4D:F0:1E:AA:AF:3C:50:7C:7C:3D:01:DF:4C:32:F8:21:FA:BA:2B:65:ED:CB:0B:D4:6F:47:2D:80:91:5D:82:F8
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (2)
hagihara-clinic.jp, www.hagihara-clinic.jp

Certificate Authority Authorization (CAA)

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

This certificate has been served since Oct 11, 2026.

Never get surprised by hagihara-clinic.jp's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch hagihara-clinic.jp continuously, notifying you the moment anything moves across all three signals:

Certificate monitor showing the issuer, expiry date, chain status, fingerprint, covered names, and a history of a rotation and an expiry warning

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.

Monitor this certificate free

Free for your first domain: uptime, DNS, and certificate together. No credit card.