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 awing-server.jp

Valid
Issued by (CA)
Let's Encrypt
Subject
awing-server.jp
Valid from
Jun 30, 2026
Valid until
Sep 28, 2026 (64 days remaining)
Public key
RSA 2048-bit
Serial
05ADDAA6F310316A2DFB907E3824567DD218
SHA-256 fingerprint
98:D5:7C:A7:B3:F8:C7:4C:2F:80:2D:66:C2:78:08:FC:C5:8B:34:3F:F2:B8:0F:51:96:07:4F:78:17:A0:86:3D
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (2)
awing-server.jp, www.awing-server.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 awing-server.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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