the /tp number command was used by the lua area protection 3.0 script I believe. That might be what you are looking for. There is a java plugin that was being made to replace it that had a gui interface for teleporting to the areas. either 1 of these should do what you want.
I don't believe this is supported rt now but it was almost ready to use but might have a few bugs in it. Was never finished being tested. It seemed to be more secure then the lua version and the lua data base could be converted to the java system on first run. It also fixed some of the problems with the old lua area protection. Hope this helps.
here is the old lua area protection.