No. It checks the ports you name, at most 20, from one address, and the list is visible in the URL. Full-range scanning is only available to verified domain owners on paid plans.

Port checker

Which TCP ports answer from the internet, with service banners.

What this check does

Tests up to 20 named TCP ports from our London probe and shows connect time and the service banner where one is sent. Database, cache and remote-desktop ports that answer are flagged as risky.

16 common ports by default, or your own list and short ranges
Connect time per port
Service banners (SSH, SMTP, FTP …)
Risky services exposed: MySQL, PostgreSQL, Redis, RDP, VNC, Memcached, MongoDB, Elasticsearch, Telnet

Questions

Is this a port scan?: No. It checks the ports you name, at most 20, from one address, and the list is visible in the URL. Full-range scanning is only available to verified domain owners on paid plans.