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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Last updated: Sat, 18 Oct 2014 02:39:13 UTC

How to use this page

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

NXX: 836

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA Eff date Disc date Map
203-836 A New Haven CT WLFRCTAICM3 6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT [link] 920 2012-02-03 map
203-836 0 New Haven CT 6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT [link] 920 2012-02-03
203-836 1 New Haven CT 6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT [link] 920 2012-02-03
203-836 2 New Haven CT 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC [link] 920 2012-10-03
203-836 3 New Haven CT 199F BANDWIDTH.COM CLEC, LLC - CT [link] 920 2012-04-20
203-836 4 New Haven CT 6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT [link] 920 2012-06-10
203-836 5 New Haven CT 3863 CTC COMMUNICATIONS CORP. - CT [link] 920 2012-02-06
203-836 6 New Haven CT 6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT [link] 920 2012-06-10
203-836 7 New Haven CT 6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT [link] 920 2012-06-10
203-836 8 New Haven CT 199F BANDWIDTH.COM CLEC, LLC - CT [link] 920 2012-05-21
203-836 9 New Haven CT 6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT [link] 920 2014-04-11



Sponsored by: VoiceMeUp - Corporate VoIP Services