Local Calling Guide

Area code/prefix search

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NPA: 857 [Rate centres in NPA 857] [Dial plan for NPA 857]

NXX: 231

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-231 A Newton MA NRTNMAAACM4  5562 METROPCS, INC. 128      
857-231 0 Newton MA NRTNMAAACM4  5562 METROPCS, INC. 128      
857-231 1 Newton MA NRTNMAAACM4  5562 METROPCS, INC. 128      
857-231 2 Newton MA NRTNMAAACM4  5562 METROPCS, INC. 128      
857-231 3 Newton MA NRTNMAAACM4  5562 METROPCS, INC. 128      
857-231 4 Newton MA BRTNMACOVMD  7135 TC SYSTEMS, INC. 128   2024-03-08   
857-231 5 Newton MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-02-20   
857-231 6 Newton MA NRTNMAAACM4  5562 METROPCS, INC. 128      
857-231 7 Newton MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-02-20   
857-231 8 Newton MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-02-20   
857-231 9 Newton MA SOVLMAABBMD  145J TERRA NOVA TELECOM INC. 128   2024-05-09   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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