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-nitro.rocks

Valid
Issued by (CA)
Let's Encrypt
Subject
lena-nitro.rocks
Valid from
Aug 15, 2026
Valid until
Nov 13, 2026 (39 days remaining)
Public key
EC 256-bit
Serial
064AD7CFA60ED2D7E7F48DCFA37893EA1E79
SHA-256 fingerprint
14:62:B5:1A:65:DE:62:42:F8:34:86:A5:D2:D6:45:83:52:7E:1F:42:E7:F8:B4:95:6C:36:77:2F:6E:62:28:80
Chain
YE1 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (1)
lena-nitro.rocks

Certificate Authority Authorization (CAA)

The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org, sectigo.com).

We've observed 1 previous certificate for this host. This certificate has been served since Aug 23, 2026.

Never get surprised by lena-nitro.rocks's certificate expiring

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