Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • 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.

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

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
203-684 A New Haven CT HRFRCT0378Z  5562 METRO PCS, INC. 920      
203-684 0 New Haven CT   199F BANDWIDTH.COM CLEC, LLC - CT 920   2012-09-06   
203-684 1 New Haven CT   199F BANDWIDTH.COM CLEC, LLC - CT 920   2012-09-06   
203-684 2 New Haven CT   199F BANDWIDTH.COM CLEC, LLC - CT 920   2012-09-06   
203-684 3 New Haven CT   350E YMAX COMMUNICATIONS CORP. - CT 920   2011-10-12   
203-684 4 New Haven CT   5562 METRO PCS, INC. 920   2008-11-17   
203-684 5 New Haven CT   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2012-02-14   
203-684 6 New Haven CT   199F BANDWIDTH.COM CLEC, LLC - CT 920   2012-09-06   
203-684 7 New Haven CT   199F BANDWIDTH.COM CLEC, LLC - CT 920   2012-09-06   
203-684 8 New Haven CT   350E YMAX COMMUNICATIONS CORP. - CT 920   2011-10-12   
203-684 9 New Haven CT   5562 METRO PCS, INC. 920   2008-11-17   

Last updated: Sat, 27 Jul 2019 10:59:49 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.