jp2112

This plugin implements DNS prefetching per the Mozilla specification for the Firefox browser. Hopefully, other browsers will eventually support DNS prefetching.
See https://developer.mozilla.org/en-US/docs/Controlling_DNS_prefetching for more detail.
Disclaimer: This plugin is not affiliated with or endorsed by Mozilla.
<h3>If you need help with this plugin</h3>
If this plugin breaks your site or just flat out does not work, create a thread in the <a href="https://wordpress.org/support/plugin/dns-prefetch" rel="ugc">Support</a> forum with a description of the issue. Make sure you are using the latest version of WordPress and the plugin before reporting issues, to be sure that the issue is with the current version and not with an older version where the issue may have already been fixed.
Please do not use the <a href="https://wordpress.org/support/view/plugin-reviews/dns-prefetch" rel="ugc">Reviews</a> section to report issues or request new features.

DNS Prefetch

Adds dns prefetching meta tags to your site.

pluc

Disabling (or configuring correctly) your site’s DNS prefetching option allows you to save immensely on bandwidth as described in <a href="http://www.pinkbike.com/news/DNS-Prefetching-Implications.html" rel="nofollow ugc">this article</a>.
To learn more about DNS Prefetching:
<ul>
<li><a href="https://developer.mozilla.org/en/controlling_dns_prefetching" rel="nofollow ugc">Controlling DNS Prefetching</a></li>
<li><a href="http://bitsup.blogspot.com/2008/11/dns-prefetching-for-firefox.html" rel="nofollow ugc">DNS Prefetching for Firefox</a></li>
<li><a href="http://blog.chromium.org/2008/09/dns-prefetching-or-pre-resolving.html" rel="nofollow ugc">DNS Prefetching or Pre-Resolving</a></li>
<li><a href="http://www.pinkbike.com/news/DNS-Prefetching-Implications.html" rel="nofollow ugc">DNS Prefetching Implications</a></li>
</ul>

Browser DNS Prefetching

Allows users to select whether they want to activate, deactivate or selectively configure Browser DNS Prefetching

DNS Prefetch vs Browser DNS Prefetching