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 1win-njh62.cfd

Valid
Issued by (CA)
Let's Encrypt
Subject
1win-njh62.cfd
Valid from
Sep 17, 2026
Valid until
Dec 16, 2026 (62 days remaining)
Public key
RSA 4096-bit
Serial
05FDBEC1EDE10021D21896D92F4A1AEB23AF
SHA-256 fingerprint
C0:20:B5:48:0B:6D:A3:1F:31:35:F4:52:72:2B:29:34:8A:C1:62:32:D0:AB:26:51:09:12:54:1E:91:2A:FC:2A
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (2)
1win-njh62.cfd, www.1win-njh62.cfd

Certificate Authority Authorization (CAA)

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

Never get surprised by 1win-njh62.cfd's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch 1win-njh62.cfd 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.