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 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
857-788 4 CMBSMA01GT4  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2022-07-22   
857-788 5 CMBSMA01GT4  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2022-07-22   
857-788 6 CMBSMA01GT4  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2022-07-22   
857-788 7 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2022-02-03   
857-788 8 CMBRMABEXFX  622J SKYE TELECOM LLC DBA SKYETEL 128   2021-10-24   
857-788 9 CMBSMA01GT4  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2022-07-22   
857-800 A BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-800 0 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2015-05-22   
857-800 1 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2015-07-23   
857-800 2 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2015-07-23   
857-800 3 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2015-07-23   
857-800 4 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2015-07-23   
857-800 5 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2015-07-23   
857-800 6 NRTNMAAACM4  5562 METROPCS, INC. 128   2016-06-19   
857-800 7 NRTNMAAACM4  5562 METROPCS, INC. 128   2016-06-19   
857-800 8 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2015-05-22   
857-800 9 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2015-05-22   
857-810 A CMBRMABEX6X  566J RADIANTIQ LLC 128      
857-810 0 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-06-12   
857-810 1 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-06-12   
857-810 2 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-06-12   
857-810 3 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-06-12   
857-810 4 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-06-12   
857-810 5 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-06-12   
857-810 6 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-06-12   
857-810 7 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-06-12   
857-810 8 CMBRMABEX6X  566J RADIANTIQ LLC 128   2021-05-10   
857-810 9 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-06-12   
857-855 A BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-855 0 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-03-25   
857-855 1 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-03-25   
857-855 2 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-03-25   
857-855 3 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-03-25   
857-855 4 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-03-25   
857-855 5 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-03-25   
857-855 6 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-03-25   
857-855 7 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-03-25   
857-855 8 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-03-25   
857-855 9 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-03-25   
857-869 A NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-869 0 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-09-14   
857-869 1 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-09-14   
857-869 2 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-09-14   
857-869 3 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-09-14   
857-869 4 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-09-14   
857-869 5 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-09-14   
857-869 6 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-09-14   
857-869 7 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-09-13   
857-869 8 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-09-13   
857-869 9 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-09-13   

<< 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 >>

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.