Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 508 [Rate centres in NPA 508] [Dial plan for NPA 508]

NXX: 903

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
508-903 A Natick MA MRBOMAFZDS0  7135 TC SYSTEMS, INC. 128      
508-903 0 Natick MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2014-04-24   
508-903 1 Natick MA   7135 TC SYSTEMS, INC. 128      
508-903 2 Natick MA   7135 TC SYSTEMS, INC. 128      
508-903 3 Natick MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2014-05-15   
508-903 4 Natick MA   7135 TC SYSTEMS, INC. 128      
508-903 5 Natick MA   7135 TC SYSTEMS, INC. 128      
508-903 6 Natick MA   7135 TC SYSTEMS, INC. 128      
508-903 7 Natick MA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2012-12-17   
508-903 8 Natick MA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2013-02-08   
508-903 9 Natick MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2026-01-07   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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