Can I use my existing registrar/host with my main domain then use Netlify for an app on a subdomain?

I currently host a WordPress website on WPX.net along with a domain.

I want to be able to host an app from Netlify using a subdomain while keeping the existing WordPress site. Is this possible?

hi there, this is possible, as long as you are using a DNS server other than Netlify DNS.

You would have to configure your DNS to point to your netlify app to route requests to the relevant subdomain.