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.

Cambridge, MA

<< 1 2 3 4 5 6 7 8 9 10 11 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
857-639 3 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2022-05-22   
857-639 4 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2022-05-22   
857-639 5 NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2022-10-21   
857-639 6 NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2022-10-21   
857-639 7 SOVLMAABCMD  516J TON80 COMMUNICATIONS, LLC 128   2022-04-18   
857-639 8 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-08-17   
857-639 9 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-08-17   
857-706 A CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
857-706 0 BSTPMALLOMD  073H TELNYX LLC 128   2021-03-04   
857-706 1 NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2015-08-12   
857-706 2 CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2015-04-25   
857-706 4 BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2015-05-16   
857-706 5 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-12-06   
857-706 6 CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2015-08-07   
857-706 7 BSTPMALLBMD  814J LIGHTPATH OF NEW ENGLAND 128   2021-12-01   
857-706 8 WSBOMAGOAMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128   2014-10-10   
857-706 9 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2022-05-20   
857-756 A CMBRMABEX9Y  0334 METROPOLITAN TELECOMMUNICATIONS OF MASS DBA METTEL 128      
857-756 0 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2008-08-18   
857-756 1 CMBRMABEX9Y  0334 METROPOLITAN TELECOMMUNICATIONS OF MASS DBA METTEL 128   2005-09-17   
857-756 2 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-11-12   
857-756 3 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2008-08-18   
857-756 4 CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2010-06-14   
857-756 5 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2006-12-04   
857-756 6 CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2010-06-14   
857-756 7 CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2010-06-14   
857-756 8 CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2009-03-02   
857-756 9 SOVLMAABBMD  145J TERRA NOVA TELECOM INC. 128   2024-02-07   
857-757 A CMBRMABEIMD  756G WIDE VOICE, LLC - MA 128      
857-757 0 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2022-05-20   
857-757 1 CMBRMABEIMD  756G WIDE VOICE, LLC - MA 128   2015-06-02   
857-757 2 SOVLMAAB5MD  732H BARR TELL USA, INC. - MA 128   2015-12-31   
857-757 3 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-12-06   
857-757 4 BSTPMALL5MD  508J CENTURYLINK COMMUNICATIONS, LLC 128   2018-02-22   
857-757 5 BSTPMALL5MD  508J CENTURYLINK COMMUNICATIONS, LLC 128   2018-02-22   
857-757 6 BSTPMALL5MD  508J CENTURYLINK COMMUNICATIONS, LLC 128   2018-02-22   
857-757 7 BSTPMALL5MD  508J CENTURYLINK COMMUNICATIONS, LLC 128   2018-02-22   
857-757 8 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2018-12-20   
857-757 9 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2018-12-20   
857-777 A SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128      
857-777 0 SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2013-01-27   
857-777 1 SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2013-01-27   
857-777 2 SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2013-01-27   
857-777 3 SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2013-01-27   
857-777 4 SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2015-06-07   
857-777 5 CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2012-08-03   
857-777 6 CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2013-12-15   
857-777 7 SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2012-04-26   
857-777 8 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-10-11   
857-777 9 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-10-11   
857-799 A CMBRMABEQMD  321J HD CARRIER LLC 128      
857-799 0 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2022-05-20   
857-799 1 CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2022-02-25   
857-799 2 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-12-06   
857-799 3 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-12-06   
857-799 4 NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2022-10-21   
857-799 5 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-11-27   
857-799 6 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-11-27   
857-799 7 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-11-27   
857-799 8 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-11-27   
857-799 9 CMBRMABEQMD  321J HD CARRIER LLC 128   2018-12-29   
857-829 A NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2024-02-09   
857-829 0 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-829 1 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-829 2 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-829 3 NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2013-11-23   
857-829 4 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2014-10-07   
857-829 5 BSTNMACOVMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128   2010-07-30   
857-829 6 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2014-10-07   
857-829 7 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-12-03   
857-829 8 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-829 9 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-12-03   
857-856 A BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-856 0 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2018-11-17   
857-856 1 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2018-11-17   
857-856 2 BSTNMACOVMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128   2016-02-04   
857-856 3 BSTNMACOVMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128   2016-02-04   
857-856 4 BSTNMACOVMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128   2016-02-04   
857-856 5 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2015-05-09   
857-856 6 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2015-05-09   
857-856 7 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2015-05-09   
857-856 8 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2015-05-09   
857-856 9   515J IP HORIZON LLC 128   2019-04-26   
857-920 A XXXXXXXXXXX  9102 VERIZON NEW ENGLAND INC. 128      
857-928 A NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-928 0 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-928 1 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2006-07-15   
857-928 2 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-928 3 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-928 4 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-928 5 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-928 6 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-928 7 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-928 8 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2006-05-26   
857-928 9 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-998 A CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-998 0 CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-998 1 CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-998 2 CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2006-04-01   
857-998 3 CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2009-08-03   

<< 1 2 3 4 5 6 7 8 9 10 11 >>

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.