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: 621

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
610-621 A Reading PA PHLAPAFGD0S  4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228      
610-621 0 Reading PA   5562 METROPCS, INC. 228   2006-07-13   
610-621 1 Reading PA   4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228      
610-621 2 Reading PA   4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228      
610-621 3 Reading PA   5562 METROPCS, INC. 228   2006-12-05   
610-621 4 Reading PA   4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228      
610-621 5 Reading PA   4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228      
610-621 6 Reading PA   5562 METROPCS, INC. 228   2006-07-13   
610-621 7 Reading PA   5562 METROPCS, INC. 228   2006-08-31   
610-621 8 Reading PA   5562 METROPCS, INC. 228   2006-08-31   
610-621 9 Reading PA   5562 METROPCS, INC. 228   2007-07-20   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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