Local Calling Guide

Area code/prefix search

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

NXX: 505

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-505 A Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128      
857-505 0 Boston MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2017-07-25   
857-505 1 Boston MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2017-07-25   
857-505 2 Boston MA   892D ONVOY, LLC - MA 128   2017-02-10   
857-505 3 Boston MA   829J PAETEC ITEL, LLC 128   2016-12-13   
857-505 4 Boston MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2017-01-31   
857-505 5 Boston MA   5562 METROPCS, INC. 128   2016-11-12   
857-505 6 Boston MA   5562 METROPCS, INC. 128   2016-11-12   
857-505 7 Boston MA   5562 METROPCS, INC. 128   2016-11-12   
857-505 8 Boston MA   5562 METROPCS, INC. 128   2016-11-12   
857-505 9 Boston MA   5562 METROPCS, INC. 128   2016-11-12   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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