User blog comment:Plexioth- xD/Monster Hunter 3 Ultimate/@comment-1758220-20130217152052

Woah, we have an english name for the online city:

PORT TANZIA

This was confirmed by Reno (a localization employee at Capcom) on the Capcom Unity forums.

http://www.capcom-unity.com/monster_hunter/go/thread/view/7451/29775509/tanzlar-harbor