Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 413 [Rate centres in NPA 413] [Dial plan for NPA 413]

NXX: 631

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
413-631 A Ludlow MA SPFDMAMADS1  7135 TC SYSTEMS, INC. 126      
413-631 0 Ludlow MA SPFDMAMADS1  7135 TC SYSTEMS, INC. 126      
413-631 1 Ludlow MA SPFDMAWONMD  624H ONVOY SPECTRUM, LLC 126   2022-02-03   
413-631 3 Ludlow MA SPFDMAWOXHX  506J TWILIO INTERNATIONAL, INC. 126   2020-12-27   
413-631 4 Ludlow MA SPFDMAWONMD  624H ONVOY SPECTRUM, LLC 126   2022-02-03   
413-631 6 Ludlow MA SPFDMAWONMD  624H ONVOY SPECTRUM, LLC 126   2020-11-30   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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