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: 503

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
610-503 A Philadelphia Suburban Zone 26 PA WAYNPALADS3  7309 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 228      

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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