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: 221

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-221 A Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128      
857-221 0 Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128   2005-07-23   
857-221 1 Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128   2005-07-23   
857-221 2 Boston MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2005-09-15   
857-221 3 Boston MA BSTNMACOVMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128   2005-09-01   
857-221 4 Boston MA BSTNMACODS0  7135 TC SYSTEMS, INC. 128   2005-09-01   
857-221 5 Boston MA BSTNMACOVMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128   2005-09-01   
857-221 7 Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128   2005-07-16   
857-221 8 Boston MA BSTNMACOVMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128   2005-09-01   
857-221 9 Boston MA BSTNMACOVMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128   2005-09-01   

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

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