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, 17 Apr 2014 10:04:41 UTC

How to use this page

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

NXX: 687

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA Eff date Disc date Map
203-687 A New Haven CT SMFRCTPUDS0 4800 LEVEL 3 COMMUNICATIONS, LLC - CT [link] 920 map
203-687 0 New Haven CT 6664 SPRINT SPECTRUM L.P. [link] 920 2003-07-21
203-687 1 New Haven CT 6664 SPRINT SPECTRUM L.P. [link] 920 2003-07-21
203-687 2 New Haven CT 6664 SPRINT SPECTRUM L.P. [link] 920 2003-07-21
203-687 3 New Haven CT 6664 SPRINT SPECTRUM L.P. [link] 920 2003-12-29
203-687 4 New Haven CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT [link] 920
203-687 5 New Haven CT 6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT [link] 920 2003-10-03
203-687 6 New Haven CT 6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT [link] 920 2003-08-09
203-687 7 New Haven CT 6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT [link] 920 2003-06-04
203-687 8 New Haven CT 6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT [link] 920 2003-08-09
203-687 9 New Haven CT 6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT [link] 920 2003-09-03



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