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: 421

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
413-421 A Holyoke MA   478J NUSO, LLC 126   2024-12-08   
413-421 9 Holyoke MA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 126      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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