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.

NPA: 857 [Rate centres in NPA 857] [Dial plan for NPA 857]

<< 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 61 62 63 64 65 66 67 68 69 70 71 72 73 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-390 6 Brookline MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2021-12-31   
857-390 7 Brookline MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2021-12-06   
857-390 8 Brookline MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2021-12-06   
857-390 9 Brookline MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2021-12-06   
857-391 A Charlestown MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-391 0 Charlestown MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2022-02-20   
857-391 1 Charlestown MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2022-02-20   
857-391 2 Charlestown MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2022-02-11   
857-391 3 Charlestown MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2022-02-11   
857-391 4 Charlestown MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2022-02-20   
857-391 5 Charlestown MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-07-08   
857-391 6 Charlestown MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2022-01-17   
857-391 7 Charlestown MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2022-01-17   
857-391 8 Charlestown MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2022-01-17   
857-391 9 Charlestown MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2022-01-17   
857-392 A Jamaica Plain MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-392 0 Jamaica Plain MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2022-03-21   
857-392 1 Jamaica Plain MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2022-03-21   
857-392 2 Jamaica Plain MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-08-14   
857-392 3 Jamaica Plain MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-08-14   
857-392 4 Jamaica Plain MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-08-14   
857-392 5 Jamaica Plain MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-08-14   
857-392 6 Jamaica Plain MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2022-12-16   
857-392 7 Jamaica Plain MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2021-11-19   
857-392 8 Jamaica Plain MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2021-11-19   
857-392 9 Jamaica Plain MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2022-12-16   
857-393 A Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-393 0 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2017-03-09   
857-393 1 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2017-03-09   
857-393 2 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2017-03-09   
857-393 3 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2017-03-09   
857-393 4 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2017-03-09   
857-393 5 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2017-04-07   
857-393 6 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2017-04-07   
857-393 8 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2017-04-07   
857-393 9 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2017-04-07   
857-394 A Belmont MA CATNMAAKPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-394 0 Belmont MA BSTNMACO1MD  073H TELNYX LLC 128   2022-08-01   
857-394 1 Belmont MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-08-09   
857-394 2 Belmont MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-08-09   
857-394 3 Belmont MA CATNMAAKPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2022-04-04   
857-394 4 Belmont MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-08-09   
857-394 5 Belmont MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-08-09   
857-394 6 Belmont MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-08-09   
857-394 7 Belmont MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2022-04-05   
857-394 8 Belmont MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2022-04-05   
857-394 9 Belmont MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2022-06-23   
857-395 A Roxbury MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-395 0 Roxbury MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2022-06-13   
857-395 1 Roxbury MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2022-06-13   

<< 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 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 >>

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.