Local Calling Guide

Area code/prefix search

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East Boston, MA

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
857-574 8 CMBRMAWA0MD  3370 CTC COMMUNICATIONS CORP. - MA 128   2001-09-24   
857-574 9 BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2011-06-03   

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Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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