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
857-202 0 CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2012-01-09   
857-202 1 CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2013-10-01   
857-202 2 CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2013-10-01   
857-202 3 CATNMAAKPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2012-01-10   
857-202 4 CATNMAAKPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2012-01-10   
857-202 5 CATNMAAKPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2012-01-10   
857-202 6 CATNMAAKPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2012-01-10   
857-202 7 CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2012-03-03   
857-202 8 CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2012-03-03   
857-202 9 CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2014-07-01   
857-204 A NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-204 0 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2002-12-09   
857-204 1   829J PAETEC ITEL, LLC 128   2010-12-30   
857-204 2 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2003-02-08   
857-204 3 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2003-02-08   
857-204 4 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2003-05-04   
857-204 5 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2003-05-27   
857-204 6 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2003-05-27   
857-204 7 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2003-05-27   
857-204 8 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2003-07-29   
857-204 9 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2002-12-09   
857-205 A CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128      
857-206 A CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-206 0 CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2011-12-08   
857-206 1 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-09-27   
857-206 2 CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2011-12-09   
857-206 3 CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2011-12-09   
857-206 4 CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2011-12-09   
857-206 5 CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2011-12-09   
857-206 6 BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2012-07-24   
857-206 7   829J PAETEC ITEL, LLC 128   2011-12-09   
857-206 8   829J PAETEC ITEL, LLC 128   2012-09-12   
857-206 9 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2011-12-09   
857-207 A CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-207 0 CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2007-06-08   
857-207 1 CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2007-08-02   
857-207 2 CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2007-08-02   
857-207 3 CATNMAAKPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2007-08-17   
857-207 4 CATNMAAKPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2007-08-17   
857-207 5 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-08-17   
857-207 6 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-08-17   
857-207 7 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-08-21   
857-207 8 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-08-21   
857-207 9 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-08-21   
857-208 A CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-208 0 CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2012-04-07   
857-208 1 CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2013-03-01   
857-208 2 CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2013-03-01   
857-208 3 CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2013-03-01   
857-208 4 CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2013-03-01   

<< 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.