Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Last updated: Wed, 01 Jul 2015 02:21:19 UTC

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 [link] 920     map

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