Fix DNS records to use "WWW" sub (or anything else)

I will make sure that your site uses the best subdomain based on its Majestic scores.

Have you ever found a pbn domain that has much stronger scores on a subdomain, as opposed to its root domain?  

I have.

People will tell you to just change the setting in wordpress - thats not right.  It doesn't change your actual DNS zone records to do it properly.  

I will.  Fast.

I'm an experienced engineer with years of network knowledge behind me.