Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 203 [Rate centres in NPA 203] [Dial plan for NPA 203]

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA Eff date Disc date Map
203-645 A New Haven CT MDTWCTNIGT1  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920     map

Last updated: Sat, 14 Apr 2018 22:33:36 UTC

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