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.

Boston, MA

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
857-223 A   829J PAETEC ITEL, LLC 128      
857-223 1   829J PAETEC ITEL, LLC 128      
857-224 A BSTNMAHADS9  9102 VERIZON NEW ENGLAND INC. 128      
857-224 0 BSTNMAHADS9  9102 VERIZON NEW ENGLAND INC. 128   2010-02-07   
857-224 1 BSTNMAHADS9  9102 VERIZON NEW ENGLAND INC. 128   2010-02-07   
857-224 2 BSTNMAHADS9  9102 VERIZON NEW ENGLAND INC. 128   2010-02-07   
857-224 3 BSTNMAHADS9  9102 VERIZON NEW ENGLAND INC. 128   2010-02-07   
857-224 4 BSTNMAHADS9  9102 VERIZON NEW ENGLAND INC. 128   2010-02-07   
857-224 5 BSTNMAHADS9  9102 VERIZON NEW ENGLAND INC. 128   2010-02-07   
857-224 6 BSTNMAHADS9  9102 VERIZON NEW ENGLAND INC. 128   2010-02-07   
857-224 7 BSTNMAHADS9  9102 VERIZON NEW ENGLAND INC. 128   2010-02-07   
857-224 8 BSTNMAHADS9  9102 VERIZON NEW ENGLAND INC. 128   2010-02-07   
857-224 9 BSTNMAHADS9  9102 VERIZON NEW ENGLAND INC. 128   2010-02-07   
857-233 A NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-233 0 CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2006-04-10   
857-233 1 NRTNMAAACM4  5562 METROPCS, INC. 128   2009-07-06   
857-233 2 NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2006-06-02   
857-233 3 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2006-07-13   
857-233 4 NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2006-06-02   
857-233 5 NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2006-06-02   
857-233 6 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2006-07-02   
857-233 7 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2006-07-02   
857-233 8 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2006-05-16   
857-233 9 CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2006-04-10   
857-236 A NRTNMAAACM4  5562 METROPCS, INC. 128      
857-236 0 NRTNMAAACM4  5562 METROPCS, INC. 128   2008-12-01   
857-236 1 NRTNMAAACM4  5562 METROPCS, INC. 128   2008-12-01   
857-236 2 NRTNMAAACM4  5562 METROPCS, INC. 128   2008-12-01   
857-236 3 NRTNMAAACM4  5562 METROPCS, INC. 128   2008-12-01   
857-236 4 NRTNMAAACM4  5562 METROPCS, INC. 128   2008-12-01   
857-236 5 NRTNMAAACM4  5562 METROPCS, INC. 128   2008-12-01   
857-236 6 NRTNMAAACM4  5562 METROPCS, INC. 128   2008-12-01   
857-236 7 NRTNMAAACM4  5562 METROPCS, INC. 128   2008-12-01   
857-236 8 NRTNMAAACM4  5562 METROPCS, INC. 128   2008-12-01   
857-236 9 NRTNMAAACM4  5562 METROPCS, INC. 128   2008-12-01   
857-237 A NRTNMAAACM4  5562 METROPCS, INC. 128      
857-237 0 NRTNMAAACM4  5562 METROPCS, INC. 128   2009-08-03   
857-237 1 NRTNMAAACM4  5562 METROPCS, INC. 128   2009-08-03   
857-237 2 NRTNMAAACM4  5562 METROPCS, INC. 128   2009-08-03   
857-237 3 NRTNMAAACM4  5562 METROPCS, INC. 128   2009-08-03   
857-237 4 NRTNMAAACM4  5562 METROPCS, INC. 128   2009-08-03   
857-237 5 NRTNMAAACM4  5562 METROPCS, INC. 128   2009-08-03   
857-237 6 NRTNMAAACM4  5562 METROPCS, INC. 128   2009-08-03   
857-237 7 NRTNMAAACM4  5562 METROPCS, INC. 128   2009-08-03   
857-237 8 NRTNMAAACM4  5562 METROPCS, INC. 128   2009-08-03   
857-237 9 NRTNMAAACM4  5562 METROPCS, INC. 128   2009-08-03   
857-238 A BSTNMABODS9  9102 VERIZON NEW ENGLAND INC. 128      
857-238 0   9102 VERIZON NEW ENGLAND INC. 128   2008-01-05   
857-238 1   9102 VERIZON NEW ENGLAND INC. 128   2008-01-05   
857-238 2   9102 VERIZON NEW ENGLAND INC. 128   2008-01-05   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 >>

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.