Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
857-237 4 Boston MA 5562 METROPCS, INC. 128   2009-08-03   
857-237 5 Boston MA 5562 METROPCS, INC. 128   2009-08-03   
857-237 6 Boston MA 5562 METROPCS, INC. 128   2009-08-03   
857-237 7 Boston MA 5562 METROPCS, INC. 128   2009-08-03   
857-237 8 Boston MA 5562 METROPCS, INC. 128   2009-08-03   
857-237 9 Boston MA 5562 METROPCS, INC. 128   2009-08-03   
857-241 0 Boston MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-04-07   
857-241 6 Boston MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-10-03   
857-241 7 Boston MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-11-12   
857-241 8 Boston MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-04-19   
857-241 9 Boston MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-04-19   
857-242 8 Cambridge MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2012-10-11   
857-242 9 Cambridge MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2012-10-11   
857-243 1 Boston MA 5562 METROPCS, INC. 128   2010-06-19   
857-243 3 Boston MA 5562 METROPCS, INC. 128   2010-06-19   
857-243 4 Boston MA 5562 METROPCS, INC. 128   2010-06-19   
857-243 5 Boston MA 5562 METROPCS, INC. 128   2010-06-19   
857-243 7 Boston MA 5562 METROPCS, INC. 128   2010-06-19   
857-244 3 Boston MA 5562 METROPCS, INC. 128   2009-07-20   
857-244 4 Boston MA 5562 METROPCS, INC. 128   2009-07-20   
857-244 5 Boston MA 5562 METROPCS, INC. 128   2009-07-06   
857-244 9 Boston MA 5562 METROPCS, INC. 128   2009-07-06   
857-245 8 Brookline MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2014-04-23   
857-246 A Boston MA 5562 METROPCS, INC. 128      
857-246 0 Boston MA 5562 METROPCS, INC. 128   2009-07-06   
857-246 1 Boston MA 5562 METROPCS, INC. 128   2009-07-06   
857-246 2 Boston MA 5562 METROPCS, INC. 128   2009-07-06   
857-246 3 Boston MA 5562 METROPCS, INC. 128   2009-07-06   
857-246 4 Boston MA 5562 METROPCS, INC. 128   2009-07-06   
857-246 5 Boston MA 5562 METROPCS, INC. 128   2009-07-06   
857-247 A Boston MA 5562 METROPCS, INC. 128      
857-247 0 Boston MA 5562 METROPCS, INC. 128   2009-07-30   
857-247 1 Boston MA 5562 METROPCS, INC. 128   2009-07-30   
857-247 2 Boston MA 5562 METROPCS, INC. 128   2009-07-30   
857-247 3 Boston MA 5562 METROPCS, INC. 128   2009-07-30   
857-247 4 Boston MA 5562 METROPCS, INC. 128   2009-07-30   
857-247 5 Boston MA 5562 METROPCS, INC. 128   2009-07-30   
857-247 6 Boston MA 5562 METROPCS, INC. 128   2009-07-30   
857-247 7 Boston MA 5562 METROPCS, INC. 128   2009-07-30   
857-247 8 Boston MA 5562 METROPCS, INC. 128   2009-07-30   
857-247 9 Boston MA 5562 METROPCS, INC. 128   2009-07-30   
857-249 A Boston MA 5562 METROPCS, INC. 128      
857-249 0 Boston MA 5562 METROPCS, INC. 128   2008-12-01   
857-249 1 Boston MA 5562 METROPCS, INC. 128   2008-12-01   
857-249 2 Boston MA 5562 METROPCS, INC. 128   2008-12-01   
857-249 3 Boston MA 5562 METROPCS, INC. 128   2009-06-29   
857-249 4 Boston MA 5562 METROPCS, INC. 128   2009-06-29   
857-249 5 Boston MA 5562 METROPCS, INC. 128   2009-06-29   
857-249 6 Boston MA 5562 METROPCS, INC. 128   2009-06-29   
857-249 7 Boston MA 5562 METROPCS, INC. 128   2009-06-29   

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Last updated: Sun, 17 May 2026 03:26:51 UTC

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