mabujo

Modern browsers allow pages to prefetch DNS records of external libraries. This plugin looks through WordPress enqueued scripts and styles and adds DNS prefetch statements for scripts and stylesheets added by other plugins.
This means that when the browser comes to download an external script or stylesheet, it already has looked up the DNS record for the external domain, and can proceed immediately to downloading the script, saving latency during loading of external resources.
You can read more about this technique in the <a href="https://www.chromium.org/developers/design-documents/dns-prefetching" rel="nofollow ugc">Chromium document</a>.
Plugin page <a href="https://mabujo.com/blog/automatic-dns-prefetch-wordpress-plugin/" rel="nofollow ugc">Automatic DNS Prefetch plugin @ mabujo</a>.

Automatic DNS Prefetch

Works as advertised

This plugin speeds up your page load speed by adding DNS prefetch statements for external libraries.

Dhiraj Suthar

This plugin will help you to remove DNS prefetch from fontend side.

Disable DNS prefetch

This plugin will help you to remove DNS prefetch from fontend side.

Automatic DNS Prefetch vs Disable DNS prefetch