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 lena-ai.net

Valid
Issued by (CA)
Let's Encrypt
Subject
lena-ai.net
Valid from
Sep 16, 2026
Valid until
Dec 15, 2026 (75 days remaining)
Public key
EC 256-bit
Serial
068208717D90F58D3369B860D6275045DDE5
SHA-256 fingerprint
26:07:58:C0:EB:D5:6A:8E:89:CF:45:C4:8E:6B:A1:ED:E2:7A:48:07:51:8F:6F:1C:CA:93:9C:49:1E:DB:BF:42
Chain
YE1 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (1)
lena-ai.net

Certificate Authority Authorization (CAA)

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

Never get surprised by lena-ai.net's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch lena-ai.net 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.