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: 528

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
610-528 A Center Point PA PHLAPAAZDS2  7309 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 228      
610-528 0 Center Point PA PHLAPAMKX4X  624H ONVOY SPECTRUM, LLC 228   2022-01-07   
610-528 1 Center Point PA PHLAPAMKX7X  321J HD CARRIER LLC 228   2016-01-02   
610-528 2 Center Point PA PHLAPAMKX4X  624H ONVOY SPECTRUM, LLC 228   2021-05-10   
610-528 3 Center Point PA PHLAPAMKX7X  321J HD CARRIER LLC 228   2016-01-02   
610-528 4 Center Point PA PHLAPAMK17Z  784E BLOCK LINE SYSTEMS, LLC - PA 228   2009-04-30   
610-528 5 Center Point PA PHLAPAMKX7X  321J HD CARRIER LLC 228   2016-01-02   
610-528 6 Center Point PA PHLAPAMKX7X  321J HD CARRIER LLC 228   2016-01-02   
610-528 7 Center Point PA PHLAPAMKX7X  321J HD CARRIER LLC 228   2016-01-02   
610-528 8 Center Point PA PHLAPAFGX2Y  506J TWILIO INTERNATIONAL, INC. 228   2020-12-01   
610-528 9 Center Point PA PHLAPAAZDS2  7309 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 228      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.