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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
857-294 3 Boston MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-10-08   
857-294 4 Boston MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-10-08   
857-294 5 Boston MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-11-12   
857-294 6 Boston MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-11-12   
857-294 7 Boston MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-11-12   
857-294 8 Boston MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-08-21   
857-294 9 Boston MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-08-17   
857-295 3 Boston MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2024-09-22   
857-295 8 Boston MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2024-09-22   
857-298 8 Cambridge MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2019-10-01   
857-298 9 Cambridge MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2019-10-01   
857-300 8 Boston MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-10-11   
857-300 9 Boston MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-10-11   
857-302 8 Boston MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2014-11-08   
857-302 9 Boston MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2014-11-08   
857-308 A Roxbury MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-308 6 Roxbury MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2014-11-14   
857-308 7 Roxbury MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2014-11-14   
857-308 8 Roxbury MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2014-11-14   
857-308 9 Roxbury MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2014-11-14   
857-310 A Boston MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-310 8 Boston MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2014-12-13   
857-310 9 Boston MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2014-12-13   
857-312 A Boston MA 5562 METROPCS, INC. 128      
857-312 0 Boston MA 5562 METROPCS, INC. 128   2008-12-01   
857-312 1 Boston MA 5562 METROPCS, INC. 128   2008-12-01   
857-312 2 Boston MA 5562 METROPCS, INC. 128   2008-12-01   
857-312 3 Boston MA 5562 METROPCS, INC. 128   2008-12-01   
857-312 4 Boston MA 5562 METROPCS, INC. 128   2008-12-01   
857-312 5 Boston MA 5562 METROPCS, INC. 128   2008-12-01   
857-312 6 Boston MA 5562 METROPCS, INC. 128   2008-12-01   
857-312 7 Boston MA 5562 METROPCS, INC. 128   2008-12-01   
857-312 8 Boston MA 5562 METROPCS, INC. 128   2008-12-01   
857-312 9 Boston MA 5562 METROPCS, INC. 128   2008-12-01   
857-313 A Boston MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-313 0 Boston MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-04-16   
857-313 1 Boston MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-04-16   
857-313 2 Boston MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-04-16   
857-313 4 Boston MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-04-16   
857-313 5 Boston MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-04-16   
857-313 8 Boston MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2012-12-21   
857-313 9 Boston MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2012-12-21   
857-316 A Brighton MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-316 5 Brighton MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2015-11-09   
857-316 6 Brighton MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2016-09-15   
857-316 7 Brighton MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2015-04-30   
857-316 8 Brighton MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2015-04-30   
857-316 9 Brighton MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2015-04-30   
857-317 0 Boston MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-10-11   
857-317 1 Boston MA 6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-10-11   

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

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