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: Sat, 31 Jan 2015 22:55:40 UTC

How to use this page

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

NXX: 492

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA Eff date Disc date Map
203-492 A New Haven CT NWHNCT03DS0 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT [link] 920 map
203-492 0 New Haven CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT [link] 920
203-492 1 New Haven CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT [link] 920
203-492 2 New Haven CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT [link] 920
203-492 3 New Haven CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT [link] 920
203-492 4 New Haven CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT [link] 920
203-492 5 New Haven CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT [link] 920
203-492 6 New Haven CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT [link] 920
203-492 7 New Haven CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT [link] 920
203-492 8 New Haven CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT [link] 920
203-492 9 New Haven CT 4036 NEW CINGULAR WIRELESS PCS, LLC - DC [link] 920 2006-03-07


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