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: Fri, 17 May 2013 01:26:12 UTC

How to use this page

NPA: 475 [Rate centres in NPA 475] [Dial plan for NPA 475]

NXX: 238

NPA-NXX-X Rate Centre Region Switch OCN LATA Eff date Disc date Map
475-238 New Haven CT 6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT [link] 920 map
475-238-0 New Haven CT 199F BANDWIDTH.COM CLEC, LLC - CT [link] 920 2011-09-18 map
475-238-1 New Haven CT 6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT [link] 920 2012-11-19
475-238-4 New Haven CT 6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT [link] 920 2012-06-26
475-238-5 New Haven CT 6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT [link] 920 2012-06-26
475-238-6 New Haven CT 7621 COMCAST PHONE OF CONNECTICUT, INC. - CT [link] 920 2012-11-12
475-238-7 New Haven CT 6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT [link] 920 2012-11-19
475-238-8 New Haven CT 7621 COMCAST PHONE OF CONNECTICUT, INC. - CT [link] 920 2010-10-13
475-238-9 New Haven CT 6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT [link] 920 2011-01-02


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