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
857-302 9   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2014-11-08   
857-303 A CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-303 0   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2013-04-01   
857-303 1   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2013-04-01   
857-303 2   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2013-12-15   
857-303 3   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2014-11-01   
857-303 4   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2015-06-19   
857-303 5   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2015-06-19   
857-303 6   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2014-05-01   
857-303 7   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2014-05-01   
857-303 8   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2014-05-01   
857-303 9   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2014-05-01   
857-305 A CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
857-305 0   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2014-05-23   
857-305 1   829J PAETEC ITEL, LLC 128   2014-04-17   
857-305 2   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2013-09-19   
857-305 3   318J COMCAST IP PHONE, LLC 128   2013-10-31   
857-305 4   829J PAETEC ITEL, LLC 128   2013-11-14   
857-305 5   829J PAETEC ITEL, LLC 128   2013-11-14   
857-305 6   892D ONVOY, LLC - MA 128   2014-09-26   
857-305 7   892D ONVOY, LLC - MA 128   2014-09-26   
857-305 8   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2014-05-09   
857-305 9   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2014-05-09   
857-306 A BSTPMALL5MD  508J CENTURYLINK COMMUNICATIONS, LLC 128      
857-306 0   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2017-12-08   
857-306 1   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2017-12-08   
857-306 2   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2017-12-08   
857-306 3   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2017-12-08   
857-306 4   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2017-12-08   
857-306 5   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2017-12-08   
857-306 6   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2017-12-08   
857-306 7   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2017-12-08   
857-306 8   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2017-12-08   
857-306 9   508J CENTURYLINK COMMUNICATIONS, LLC 128   2017-12-08   
857-310 A NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-310 0   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2015-02-01   
857-310 1   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2015-02-01   
857-310 2   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2015-02-01   
857-310 3   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2015-02-01   
857-310 4   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2015-03-01   
857-310 5   318J COMCAST IP PHONE, LLC 128   2015-01-12   
857-310 6   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2015-03-15   
857-310 7   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2015-03-15   
857-310 8   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2014-12-13   
857-310 9   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2014-12-13   
857-312 A NRTNMAAACM4  5562 METROPCS, INC. 128      
857-312 0   5562 METROPCS, INC. 128   2008-12-01   
857-312 1   5562 METROPCS, INC. 128   2008-12-01   
857-312 2   5562 METROPCS, INC. 128   2008-12-01   
857-312 3   5562 METROPCS, INC. 128   2008-12-01   
857-312 4   5562 METROPCS, INC. 128   2008-12-01   
857-312 5   5562 METROPCS, INC. 128   2008-12-01   
857-312 6   5562 METROPCS, INC. 128   2008-12-01   
857-312 7   5562 METROPCS, INC. 128   2008-12-01   
857-312 8   5562 METROPCS, INC. 128   2008-12-01   
857-312 9   5562 METROPCS, INC. 128   2008-12-01   
857-313 A NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-313 0   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-04-16   
857-313 1   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-04-16   
857-313 2   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-04-16   
857-313 3   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2013-01-27   
857-313 4   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-04-16   
857-313 5   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-04-16   
857-313 6   829J PAETEC ITEL, LLC 128   2013-02-06   
857-313 7   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2014-02-11   
857-313 8   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2012-12-21   
857-313 9   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2012-12-21   
857-315 A BSTPMALL5MD  508J CENTURYLINK COMMUNICATIONS, LLC 128      
857-315 0   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2017-12-08   
857-315 1   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2017-12-08   
857-315 2   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2017-12-08   
857-315 3   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2017-12-08   
857-315 4   508J CENTURYLINK COMMUNICATIONS, LLC 128   2017-12-08   
857-315 5   318J COMCAST IP PHONE, LLC 128   2017-12-09   
857-315 6   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2024-10-11   
857-315 7   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2017-12-11   
857-315 8   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2017-12-11   
857-315 9   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2024-10-11   
857-317 A BSTPMALL5MD  508J CENTURYLINK COMMUNICATIONS, LLC 128      
857-317 0   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-10-11   
857-317 1   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-10-11   
857-317 2   318J COMCAST IP PHONE, LLC 128   2014-05-29   
857-317 3   318J COMCAST IP PHONE, LLC 128   2014-05-29   
857-317 4   318J COMCAST IP PHONE, LLC 128   2014-05-29   
857-317 5   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2015-01-14   
857-317 6   318J COMCAST IP PHONE, LLC 128   2014-04-12   
857-317 7   508J CENTURYLINK COMMUNICATIONS, LLC 128   2013-05-31   
857-317 8   268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2013-10-24   
857-317 9   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2014-08-23   
857-318 A CATNMAAKPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-318 0   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2007-12-10   
857-318 1   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2008-04-24   
857-318 2   5562 METROPCS, INC. 128   2009-07-06   
857-318 3   5562 METROPCS, INC. 128   2009-07-06   
857-318 4   5562 METROPCS, INC. 128   2009-07-06   
857-318 5   5562 METROPCS, INC. 128   2009-07-06   
857-318 6   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2008-05-01   
857-318 7   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2008-05-01   
857-318 8   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2008-05-01   
857-318 9   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2008-05-01   

<< 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 >>

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.