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: 610 [Rate centres in NPA 610] [Dial plan for NPA 610]

NXX: 227

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
610-227 A Philadelphia Suburban Zone 23 PA KGPRPADODS0  7434 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 228      
610-227 0 Philadelphia Suburban Zone 23 PA KGPRPADODS0  7434 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 228      
610-227 1 Philadelphia Suburban Zone 23 PA KGPRPADODS0  7434 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 228      
610-227 2 Philadelphia Suburban Zone 23 PA KGPRPADODS0  7434 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 228      
610-227 3 Philadelphia Suburban Zone 23 PA   3806 CORE COMMUNICATIONS, INC. - PA 228   2019-03-15   
610-227 4 Philadelphia Suburban Zone 23 PA   3806 CORE COMMUNICATIONS, INC. - PA 228   2018-10-26   
610-227 5 Philadelphia Suburban Zone 23 PA WNRTPAAHCMA  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 228      
610-227 6 Philadelphia Suburban Zone 23 PA PHLAPAFGXCX  073H TELNYX LLC 228   2019-03-18   
610-227 7 Philadelphia Suburban Zone 23 PA PHLAPAMKX7X  321J HD CARRIER LLC 228   2016-05-20   
610-227 8 Philadelphia Suburban Zone 23 PA ALTWPADTRS0  8320 SERVICE ELECTRIC TELEPHONE COMPANY, LLC 228   2003-02-07   
610-227 9 Philadelphia Suburban Zone 23 PA PHLAPAMKX4X  624H ONVOY SPECTRUM, LLC 228   2021-11-05   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.