Local Calling Guide

Area code/prefix search

Search by area code/prefix (NPA/NXX) or OCN

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Last updated: Sat, 25 Oct 2014 11:08:09 UTC

How to use this page

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

NXX: 503

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA Eff date Disc date Map
203-503 A New Haven CT NWHNCT03DS0 9147 SOUTHERN NEW ENGLAND TELEPHONE CO. [link] 920 map
203-503 0 New Haven CT 9147 SOUTHERN NEW ENGLAND TELEPHONE CO. [link] 920
203-503 1 New Haven CT 6624 OMNIPOINT COMMUNICATIONS, INC. - CT [link] 920 2005-12-10
203-503 2 New Haven CT 9147 SOUTHERN NEW ENGLAND TELEPHONE CO. [link] 920
203-503 3 New Haven CT 9147 SOUTHERN NEW ENGLAND TELEPHONE CO. [link] 920
203-503 4 New Haven CT 6624 OMNIPOINT COMMUNICATIONS, INC. - CT [link] 920 2008-07-17
203-503 5 New Haven CT 9147 SOUTHERN NEW ENGLAND TELEPHONE CO. [link] 920
203-503 6 New Haven CT 9147 SOUTHERN NEW ENGLAND TELEPHONE CO. [link] 920
203-503 7 New Haven CT 6624 OMNIPOINT COMMUNICATIONS, INC. - CT [link] 920 2007-01-08
203-503 8 New Haven CT 6624 OMNIPOINT COMMUNICATIONS, INC. - CT [link] 920 2007-01-08
203-503 9 New Haven CT 9147 SOUTHERN NEW ENGLAND TELEPHONE CO. [link] 920



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