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: 484 [Rate centres in NPA 484] [Dial plan for NPA 484]

NXX: 257

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
484-257 A Philadelphia Suburban Zone 17 PA PHLAPAFGX1Y  2514 US LEC OF PENNSYLVANIA, INC. 228      
484-257 0 Philadelphia Suburban Zone 17 PA PHLAPAFGX1Y  2514 US LEC OF PENNSYLVANIA, INC. 228      
484-257 1 Philadelphia Suburban Zone 17 PA PHLAPAFGX1Y  2514 US LEC OF PENNSYLVANIA, INC. 228      
484-257 2 Philadelphia Suburban Zone 17 PA PHLAPAFGX1Y  2514 US LEC OF PENNSYLVANIA, INC. 228      
484-257 3 Philadelphia Suburban Zone 17 PA PHLAPAFGX1Y  2514 US LEC OF PENNSYLVANIA, INC. 228      
484-257 4 Philadelphia Suburban Zone 17 PA PHLAPAFGD2S  547E ONVOY, LLC - PA 228   2004-08-21   
484-257 5 Philadelphia Suburban Zone 17 PA ALTWPAAEDS0  7341 XO COMMUNICATIONS SERVICES, INC. - PA 228   2005-07-24   
484-257 6 Philadelphia Suburban Zone 17 PA PHLAPAFGD0S  4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228   2006-10-27   
484-257 7 Philadelphia Suburban Zone 17 PA PHLAPAFGD0S  4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228   2006-01-08   
484-257 8 Philadelphia Suburban Zone 17 PA PHLAPAFGD0S  4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228   2006-01-08   
484-257 9 Philadelphia Suburban Zone 17 PA PHLAPAMK20Z  002F BANDWIDTH.COM CLEC, LLC - PA 228   2010-06-24   

Last updated: Wed, 01 Jun 2022 03:09:23 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.