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: 450

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
610-450 A Exton PA PHLAPAFGD0S  4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228      
610-450 0 Exton PA PHLAPAFGXXX  145J TERRA NOVA TELECOM INC. 228   2024-02-14   
610-450 1 Exton PA PHLAPAMKX4X  624H ONVOY SPECTRUM, LLC 228   2021-11-05   
610-450 2 Exton PA PHLAPAMKX4X  624H ONVOY SPECTRUM, LLC 228   2021-11-05   
610-450 3 Exton PA PHLAPAMKX4X  624H ONVOY SPECTRUM, LLC 228   2021-11-05   
610-450 4 Exton PA PHLAPAFGD0S  4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228      
610-450 5 Exton PA   145J TERRA NOVA TELECOM INC. 228   2021-12-01   
610-450 6 Exton PA PHLAPAFGD0S  4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228      
610-450 7 Exton PA PHLAPAMKX4X  624H ONVOY SPECTRUM, LLC 228   2021-11-05   
610-450 8 Exton PA PHLAPAMKX4X  624H ONVOY SPECTRUM, LLC 228   2021-11-05   
610-450 9 Exton PA PHLAPAMKX4X  624H ONVOY SPECTRUM, LLC 228   2021-11-05   

Last updated: Mon, 15 Sep 2025 02:24:40 UTC

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