Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 857 [Rate centres in NPA 857] [Dial plan for NPA 857]

NXX: 991

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-991 A Boston MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128      
857-991 0 Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128   2003-12-29   
857-991 1 Boston MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2002-07-29   
857-991 2 Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128   2003-12-29   
857-991 3 Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128   2003-12-29   
857-991 4 Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128   2004-08-10   
857-991 5 Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128   2004-08-10   
857-991 6 Boston MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2003-12-02   
857-991 7 Boston MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2003-12-02   
857-991 8 Boston MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2004-08-09   
857-991 9 Boston MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2003-12-13   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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