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 borderless-ja.com

Valid
Issued by (CA)
Google Trust Services
Subject
borderless-ja.com
Valid from
Sep 15, 2026
Valid until
Dec 14, 2026 (87 days remaining)
Public key
EC 256-bit
Serial
C93CAA87EEDED55113AEB5D8318B9C27
SHA-256 fingerprint
71:48:55:C4:89:45:9F:45:9A:48:AC:B7:F5:35:C9:38:8E:2D:34:43:B6:CA:20:4A:ED:33:C8:A5:03:9F:DD:6D
Chain
WE1 → GTS Root R4
Subject Alternative Names (1)
borderless-ja.com

Certificate Authority Authorization (CAA)

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

Never get surprised by borderless-ja.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch borderless-ja.com 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.

Monitor this certificate free

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