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.
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Last updated: Thu, 20 Nov 2014 03:01:16 UTC

How to use this page

NPA: 203 [Rate centres in NPA 203] [Dial plan for NPA 203]

NXX: 815

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA Eff date Disc date Map
203-815 A New Haven CT WLFRCTAICM3 6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT [link] 920 map
203-815 0 New Haven CT 6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT [link] 920 2006-08-03
203-815 1 New Haven CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT [link] 920 2010-04-11
203-815 2 New Haven CT 6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT [link] 920 2006-07-02
203-815 3 New Haven CT 6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT [link] 920 2006-02-04
203-815 4 New Haven CT 6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT [link] 920 2006-02-04
203-815 5 New Haven CT 6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT [link] 920 2005-09-04
203-815 6 New Haven CT 6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT [link] 920 2006-04-03
203-815 7 New Haven CT 6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT [link] 920 2006-04-03
203-815 8 New Haven CT 6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT [link] 920 2005-12-02
203-815 9 New Haven CT 6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT [link] 920 2006-04-03



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