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 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
857-333 0   5562 METROPCS, INC. 128   2011-02-18   
857-333 1   5562 METROPCS, INC. 128   2011-02-18   
857-333 2   5562 METROPCS, INC. 128   2011-02-18   
857-333 3   5562 METROPCS, INC. 128   2011-02-18   
857-333 4   5562 METROPCS, INC. 128   2011-02-18   
857-333 5   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2012-12-16   
857-333 6   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2012-12-16   
857-333 7   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2012-12-16   
857-333 8   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2012-12-16   
857-333 9   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2011-01-07   
857-334 A NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-334 0   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2006-12-04   
857-334 1   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2006-12-04   
857-334 2   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2006-12-04   
857-334 3   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2006-12-15   
857-334 4   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2006-11-13   
857-334 5   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2006-11-13   
857-334 6   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2006-11-11   
857-334 7   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2006-11-11   
857-334 8   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2006-11-11   
857-334 9   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2006-11-11   
857-335 A BSTPMALLX0X  425J CSC WIRELESS, LLC 128      
857-335 0   5562 METROPCS, INC. 128   2020-06-06   
857-335 1   892D ONVOY, LLC - MA 128   2020-06-15   
857-335 2   425J CSC WIRELESS, LLC 128   2019-07-28   
857-335 3   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2019-08-05   
857-335 4   892D ONVOY, LLC - MA 128   2023-06-26   
857-335 5   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2019-10-03   
857-335 6   5562 METROPCS, INC. 128   2020-06-06   
857-335 7   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2019-10-12   
857-335 8   892D ONVOY, LLC - MA 128   2020-06-15   
857-335 9   892D ONVOY, LLC - MA 128   2020-06-15   
857-338 A BSTNMACODS0  7135 TC SYSTEMS, INC. 128      
857-338 0   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2018-03-27   
857-338 1   318J COMCAST IP PHONE, LLC 128   2018-12-12   
857-338 2   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2018-03-27   
857-338 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2018-03-27   
857-338 4   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2018-12-19   
857-338 5   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2018-12-19   
857-338 6   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2018-12-19   
857-338 7   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2018-12-12   
857-338 8   7135 TC SYSTEMS, INC. 128   2018-03-26   
857-338 9   7135 TC SYSTEMS, INC. 128   2018-03-26   
857-343 A CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-343 0   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2018-05-07   
857-343 1   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2018-05-07   
857-343 2   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2018-05-07   
857-343 3   892D ONVOY, LLC - MA 128   2023-06-26   
857-343 4   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2019-10-12   
857-343 5   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2019-10-12   
857-343 6   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2019-10-12   
857-343 7   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2019-10-12   
857-343 8   892D ONVOY, LLC - MA 128   2018-06-16   
857-343 9   5562 METROPCS, INC. 128   2018-08-02   
857-346 A SOVLMAAB0MD  148J TELENGY LLC 128      
857-346 0   148J TELENGY LLC 128   2018-07-07   
857-346 1   551G NUSO, LLC 128   2018-07-22   
857-346 2   318J COMCAST IP PHONE, LLC 128   2018-07-22   
857-346 3   5562 METROPCS, INC. 128   2018-07-14   
857-346 4   5562 METROPCS, INC. 128   2018-07-14   
857-346 5   5562 METROPCS, INC. 128   2018-07-14   
857-346 6   5562 METROPCS, INC. 128   2018-08-02   
857-346 7   5562 METROPCS, INC. 128   2018-08-02   
857-346 8   5562 METROPCS, INC. 128   2018-08-02   
857-346 9   5562 METROPCS, INC. 128   2018-08-02   
857-347 A BSTPMALLVMD  181J ADVANCED TELECOM SOLUTIONS, LLC 128      
857-347 0   181J ADVANCED TELECOM SOLUTIONS, LLC 128   2018-08-27   
857-347 1   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2018-10-07   
857-347 2   551G NUSO, LLC 128   2018-10-14   
857-347 3   892D ONVOY, LLC - MA 128   2018-08-28   
857-347 4   892D ONVOY, LLC - MA 128   2018-08-28   
857-347 5   892D ONVOY, LLC - MA 128   2018-08-28   
857-347 6   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2018-08-28   
857-347 7   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2018-08-28   
857-347 8   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2018-08-28   
857-347 9   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2018-08-28   
857-348 A CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2024-12-29   
857-348 0   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2018-10-07   
857-348 1   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2024-11-13   
857-348 2   551G NUSO, LLC 128   2018-10-14   
857-348 3   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2018-11-26   
857-348 4   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2018-11-26   
857-348 5   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2018-11-26   
857-348 6   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2018-09-27   
857-348 7   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2018-09-27   
857-348 8   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2018-09-27   
857-348 9   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2018-09-27   
857-350 A CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-350 0   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2007-08-09   
857-350 1   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2007-09-07   
857-350 2   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-11-16   
857-350 3   318J COMCAST IP PHONE, LLC 128   2007-10-01   
857-350 4   318J COMCAST IP PHONE, LLC 128   2007-10-01   
857-350 5   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-11-16   
857-350 6   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-11-16   
857-350 7   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-11-16   
857-350 8   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2007-12-07   
857-350 9   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2007-12-07   
857-353 A   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-353 0   5562 METROPCS, INC. 128   2020-06-06   

<< 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 >>

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.