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 gen-win.net

Valid
Issued by (CA)
Let's Encrypt
Subject
gen-win.net
Valid from
Sep 1, 2026
Valid until
Nov 30, 2026 (54 days remaining)
Public key
RSA 2048-bit
Serial
06382428DD03D02D543463BE731171761967
SHA-256 fingerprint
5D:9C:E0:4F:C6:6F:96:11:D0:F5:5A:40:82:A7:A3:66:1A:96:AE:8F:3A:6D:E9:1D:37:25:1D:73:EC:2B:22:B8
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (2)
*.gen-win.net, gen-win.net

Certificate Authority Authorization (CAA)

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

We've observed 1 previous certificate for this host. This certificate has been served since Sep 21, 2026.

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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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