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 my-u.net

Valid
Issued by (CA)
Let's Encrypt
Subject
ftp.my-u.net
Valid from
Sep 15, 2026
Valid until
Dec 14, 2026 (60 days remaining)
Public key
EC 384-bit
Serial
06B4AE2870325A9FC5476E89DD6EA4C48038
SHA-256 fingerprint
87:78:44:05:82:31:25:0B:6C:9B:42:84:2A:CD:45:28:02:12:0B:A2:11:8A:19:8D:FA:D2:6E:64:A5:FD:11:1E
Chain
YE2 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (6)
ftp.my-u.net, mail.my-u.net, my-u.net, pop.my-u.net, smtp.my-u.net, www.my-u.net

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 10, 2026.

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

Uptime

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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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