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: 500

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
508-500 A Marion MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
508-500 0 Marion MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-02-12   
508-500 1 Marion MA   892D ONVOY, LLC - MA 128   2016-04-15   
508-500 2 Marion MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-05-21   
508-500 3 Marion MA   145J TERRA NOVA TELECOM INC. 128   2021-09-30   
508-500 4 Marion MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
508-500 5 Marion MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2006-05-11   
508-500 6 Marion MA   892D ONVOY, LLC - MA 128   2019-07-01   
508-500 7 Marion MA   829J PAETEC ITEL, LLC 128   2006-10-21   
508-500 8 Marion MA   892D ONVOY, LLC - MA 128   2016-04-15   
508-500 9 Marion MA   892D ONVOY, LLC - MA 128   2013-01-11   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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