the wiki link here seems broken: http://support.arpnetworks.com/kb/main/do-you-have-a-wiki
it tries to open: http://www.arpnetworks.comwiki/
For me it seems to redirect to http://www.arpnetworks.com/colocationwiki
wiki.arpnetworks.com redirects to http://www.arpnetworks.com/colocation
I blame communism