Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: CMBRMA01DS4

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
857-574 7 East Boston MA 7421 AT&T - LOCAL 128      

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

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