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 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-378 7 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2017-03-06   
857-378 8 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2017-03-06   
857-378 9 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2017-03-06   
857-379 A Roxbury MA SOVLMAAB6MD  939H COMMIO, LLC 128   2024-12-28   
857-379 0 Roxbury MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2022-08-25   
857-379 1 Roxbury MA SOVLMAAB6MD  939H COMMIO, LLC 128   2021-10-11   
857-379 2 Roxbury MA SOVLMAAB6MD  939H COMMIO, LLC 128   2021-10-11   
857-379 3 Roxbury MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2021-10-18   
857-379 4 Roxbury MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2022-02-07   
857-379 5 Roxbury MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2021-11-21   
857-379 6 Roxbury MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2022-02-07   
857-379 7 Roxbury MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2021-11-21   
857-379 8 Roxbury MA SOVLMAAB6MD  939H COMMIO, LLC 128   2021-10-11   
857-379 9 Roxbury MA SOVLMAAB6MD  939H COMMIO, LLC 128   2021-10-11   
857-380 A East Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-380 0 East Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-04-06   
857-380 1 East Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2020-07-12   
857-380 2 East Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2020-07-12   
857-380 3 East Boston MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2024-12-06   
857-380 4 East Boston MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2021-04-08   
857-380 5 East Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-03-06   
857-380 6 East Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-03-06   
857-380 7 East Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-03-06   
857-380 8 East Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-03-06   
857-380 9 East Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-04-06   
857-381 A Brookline MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-381 0 Brookline MA BSTPMALLOMD  073H TELNYX LLC 128   2022-01-01   
857-381 1 Brookline MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2021-11-01   
857-381 2 Brookline MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2021-11-01   
857-381 3 Brookline MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2021-11-01   
857-381 4 Brookline MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2021-12-31   
857-381 5 Brookline MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2021-10-24   
857-381 6 Brookline MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2021-10-24   
857-381 7 Brookline MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2021-10-24   
857-381 8 Brookline MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2021-10-24   
857-381 9 Brookline MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2021-10-24   
857-382 A East Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-382 0 East Boston MA BSTPMALLOMD  073H TELNYX LLC 128   2021-10-11   
857-382 1 East Boston MA BSTPMALLOMD  073H TELNYX LLC 128   2023-01-02   
857-382 2 East Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-08-14   
857-382 3 East Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-08-14   
857-382 4 East Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-08-14   
857-382 5 East Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-08-14   
857-382 6 East Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2022-09-29   
857-382 7 East Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2022-09-29   
857-382 8 East Boston MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2021-11-27   
857-382 9 East Boston MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2021-11-27   
857-383 A Boston MA CMBRMA01DS5  7135 TC SYSTEMS, INC. 128      
857-383 0 Boston MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2005-12-23   
857-383 1 Boston MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2006-03-03   
857-383 2 Boston MA   829J PAETEC ITEL, LLC 128   2005-11-30   
857-383 3 Boston MA   829J PAETEC ITEL, LLC 128   2005-11-07   
857-383 4 Boston MA CMBRMA01DS5  7135 TC SYSTEMS, INC. 128   2005-12-10   
857-383 5 Boston MA CMBRMA01DS5  7135 TC SYSTEMS, INC. 128   2005-12-10   
857-383 6 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2014-05-01   
857-383 7 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2014-05-01   
857-383 8 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2006-01-02   
857-383 9 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2006-01-02   
857-384 A Brighton MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-384 0 Brighton MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2021-10-24   
857-384 1 Brighton MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2021-10-24   
857-384 2 Brighton MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2022-03-26   
857-384 3 Brighton MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2022-02-11   
857-384 4 Brighton MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-09-18   
857-384 5 Brighton MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-09-18   
857-384 6 Brighton MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-09-18   
857-384 7 Brighton MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2022-02-11   
857-384 8 Brighton MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2021-10-24   
857-384 9 Brighton MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2022-03-26   
857-385 A Dorchester MA CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128      
857-385 0 Dorchester MA CMBRMABEQMD  321J HD CARRIER LLC 128   2016-09-03   
857-385 1 Dorchester MA CMBRMABEQMD  321J HD CARRIER LLC 128   2016-09-03   
857-385 2 Dorchester MA CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2023-04-15   
857-385 3 Dorchester MA CMBRMAORDS0  7199 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA 128   2016-07-24   
857-385 4 Dorchester MA CMBRMABEQMD  321J HD CARRIER LLC 128   2016-09-03   
857-385 5 Dorchester MA CMBRMABEQMD  321J HD CARRIER LLC 128   2016-09-03   
857-385 6 Dorchester MA CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2016-07-23   
857-385 7 Dorchester MA CMBRMABEQMD  321J HD CARRIER LLC 128   2016-09-03   
857-385 8 Dorchester MA CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2016-10-24   
857-385 9 Dorchester MA CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2016-10-24   
857-386 A Chelsea MA CHLSMACHDS0  9102 VERIZON NEW ENGLAND INC. 128      
857-386 0 Chelsea MA BSTPMALLOMD  073H TELNYX LLC 128   2017-04-28   
857-386 1 Chelsea MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2018-10-30   
857-386 2 Chelsea MA CHLSMACHDS0  9102 VERIZON NEW ENGLAND INC. 128   2016-09-03   
857-386 3 Chelsea MA CHLSMACHDS0  9102 VERIZON NEW ENGLAND INC. 128   2016-09-03   
857-386 4 Chelsea MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2020-06-21   
857-386 5 Chelsea MA CHTWMABF2MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 128   2017-04-14   
857-386 6 Chelsea MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2019-02-23   
857-386 7 Chelsea MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2019-02-23   
857-386 8 Chelsea MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2018-11-08   
857-386 9 Chelsea MA   515J IP HORIZON LLC 128   2017-07-02   
857-387 A Quincy MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128      
857-387 0 Quincy MA CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2024-01-07   
857-387 1 Quincy MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2024-02-25   
857-387 2 Quincy MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2021-11-01   
857-387 3 Quincy MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2022-11-17   
857-387 4 Quincy MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2022-11-17   
857-387 5 Quincy MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2022-11-17   
857-387 6 Quincy MA SOVLMAABCMD  516J TON80 COMMUNICATIONS, LLC 128   2022-03-13   
857-387 7 Quincy MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2022-02-07   

<< 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 >>

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.