There's nothing that I've found in ARIN documentation reporting this as a violation. Please post the section of the terms that it violates.

You are using the IP numbers for a site (shared or dedicated IPs). The more links from outside of your network that point back to your site, the more "clout" you have. This is standard link ranking. You should of course build up those other sites so that you have a higher Alexa ranking and then rank them back to you. The higher the rank, the more weight is thrown to your page by the search engines.

The key on all of this is ONE WAY LINKS. You want links pointing TO your site, and very few (if any) pointing OUT.