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
857-363 3 Everett MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2006-03-24   
857-363 4 Everett MA CMBRMABEZMD  756G WIDE VOICE, LLC - MA 128   2016-09-03   
857-363 5 Everett MA BSTPMALLOMD  073H TELNYX LLC 128   2023-08-02   
857-363 6 Everett MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2022-05-14   
857-363 7 Everett MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2016-02-18   
857-363 8 Everett MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-363 9 Everett MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-364 A Brookline MA CHTWMABMAMD  2899 BROADVIEW NETWORKS, INC. - MA 128      
857-364 0 Brookline MA CHTWMABMAMD  2899 BROADVIEW NETWORKS, INC. - MA 128   2001-07-27   
857-364 1 Brookline MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2009-02-12   
857-364 2 Brookline MA BKLIMAMADS1  9102 VERIZON NEW ENGLAND INC. 128   2005-03-12   
857-364 3 Brookline MA BKLIMAMADS1  9102 VERIZON NEW ENGLAND INC. 128   2005-03-12   
857-364 4 Brookline MA BKLIMAMADS1  9102 VERIZON NEW ENGLAND INC. 128   2005-03-12   
857-364 5 Brookline MA BKLIMAMADS1  9102 VERIZON NEW ENGLAND INC. 128   2005-03-12   
857-364 6 Brookline MA BKLIMAMADS1  9102 VERIZON NEW ENGLAND INC. 128   2005-03-12   
857-364 7 Brookline MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-11-12   
857-364 8 Brookline MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2010-03-15   
857-364 9 Brookline MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2014-04-23   
857-365 A Boston MA CMBRMABEVMD  478J NUSO, LLC 128      
857-365 0 Boston MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2022-07-29   
857-365 1 Boston MA CMBRMABEVMD  478J NUSO, LLC 128   2020-07-26   
857-365 2 Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-07-10   
857-365 3 Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-07-10   
857-365 4 Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-07-10   
857-365 5 Boston MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2021-04-05   
857-365 6 Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2020-10-03   
857-365 7 Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-07-10   
857-365 8 Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2022-08-06   
857-365 9 Boston MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2022-10-03   
857-366 A Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-366 0 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2006-05-06   
857-366 1 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2006-05-06   
857-366 2 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2006-05-06   
857-366 3 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2014-05-01   
857-366 4 Boston MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2008-04-10   
857-366 5 Boston MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2006-06-30   
857-366 6 Boston MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2006-06-30   
857-366 7 Boston MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2007-12-03   
857-366 8 Boston MA BSTPMALLDS1  4536 XO MASSACHUSETS, INC. 128   2007-06-08   
857-366 9 Boston MA BSTPMALLDS1  4536 XO MASSACHUSETS, INC. 128   2007-06-08   
857-367 A Watertown MA CMBRMA01DS5  7135 TC SYSTEMS, INC. 128      
857-367 0 Watertown MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-03-06   
857-367 1 Watertown MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-03-06   
857-367 2 Watertown MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-03-06   
857-367 3 Watertown MA BSTPMALLZMD  506J TWILIO INTERNATIONAL, INC. 128   2020-12-19   
857-367 4 Watertown MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-04-06   
857-367 5 Watertown MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2021-04-15   
857-367 6 Watertown MA CMBRMA01DS5  7135 TC SYSTEMS, INC. 128   2020-12-07   
857-367 7 Watertown MA CMBRMA01DS5  7135 TC SYSTEMS, INC. 128   2021-02-26   
857-367 8 Watertown MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-04-06   

<< 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: LES.NET

Like this site? We accept donations via PayPal.