Local Calling Guide

Area code/prefix search

Search by area code/prefix (NPA/NXX) or OCN

  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Last updated: Sat, 20 Sep 2014 21:25:14 UTC

How to use this page

NPA: 734 [Rate centres in NPA 734] [Dial plan for NPA 734]

NXX: 489

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA Eff date Disc date Map
734-489 A Ann Arbor MI FLNTMICDDS0 7701 PHONE MICHIGAN [link] 340 map
734-489 0 Ann Arbor MI 7701 PHONE MICHIGAN [link] 340
734-489 1 Ann Arbor MI 7701 PHONE MICHIGAN [link] 340
734-489 2 Ann Arbor MI 6664 SPRINT SPECTRUM L.P. [link] 340 2010-12-19
734-489 3 Ann Arbor MI 6664 SPRINT SPECTRUM L.P. [link] 340 2010-12-19
734-489 4 Ann Arbor MI 6664 SPRINT SPECTRUM L.P. [link] 340 2010-12-19
734-489 5 Ann Arbor MI 6664 SPRINT SPECTRUM L.P. [link] 340 2010-12-19
734-489 6 Ann Arbor MI 7701 PHONE MICHIGAN [link] 340
734-489 7 Ann Arbor MI 7701 PHONE MICHIGAN [link] 340
734-489 8 Ann Arbor MI 7701 PHONE MICHIGAN [link] 340
734-489 9 Ann Arbor MI 7701 PHONE MICHIGAN [link] 340



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