Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 610 [Rate centres in NPA 610] [Dial plan for NPA 610]

NXX: 723

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
610-723 A Philadelphia Suburban Zone 22 PA PHLAPAFGD0S  4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228      
610-723 1 Philadelphia Suburban Zone 22 PA PHLAPAFGD0S  4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228      
610-723 3 Philadelphia Suburban Zone 22 PA   3806 CORE COMMUNICATIONS, INC. - PA 228   2018-06-09   
610-723 4 Philadelphia Suburban Zone 22 PA PHLAPAFGD0S  4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228      
610-723 5 Philadelphia Suburban Zone 22 PA PHLAPAMKGMD  551G NUSO, LLC 228   2018-11-07   
610-723 6 Philadelphia Suburban Zone 22 PA PHLAPAMKXCX  318J COMCAST IP PHONE, LLC 228   2019-05-10   
610-723 7 Philadelphia Suburban Zone 22 PA PHLAPAFGD4S  967E PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 228   2018-11-21   
610-723 8 Philadelphia Suburban Zone 22 PA PHLAPAMKGMD  551G NUSO, LLC 228   2016-09-23   
610-723 9 Philadelphia Suburban Zone 22 PA PHLAPAMKGMD  551G NUSO, LLC 228   2016-09-23   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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