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: 422

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
508-422 A Milford MA MLFRMAWADS0  9102 VERIZON NEW ENGLAND INC. 128      
508-422 0 Milford MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2008-05-16   
508-422 1 Milford MA   9102 VERIZON NEW ENGLAND INC. 128      
508-422 2 Milford MA   9102 VERIZON NEW ENGLAND INC. 128      
508-422 3 Milford MA   9102 VERIZON NEW ENGLAND INC. 128      
508-422 4 Milford MA   892D ONVOY, LLC - MA 128   2010-03-15   
508-422 5 Milford MA   892D ONVOY, LLC - MA 128   2010-03-15   
508-422 6 Milford MA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2009-11-10   
508-422 7 Milford MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2010-09-10   
508-422 8 Milford MA   829J PAETEC ITEL, LLC 128   2003-11-16   
508-422 9 Milford MA   9102 VERIZON NEW ENGLAND INC. 128      

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

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