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 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-227 2 Somerville MA   756G WIDE VOICE, LLC - MA 128   2016-04-11   
857-227 3 Somerville MA   4084 PAETEC COMMUNICATIONS, INC.- MA 128   2016-03-09   
857-227 4 Somerville MA   4084 PAETEC COMMUNICATIONS, INC.- MA 128   2016-03-09   
857-227 5 Somerville MA   4084 PAETEC COMMUNICATIONS, INC.- MA 128   2016-03-09   
857-227 6 Somerville MA   756G WIDE VOICE, LLC - MA 128   2016-04-11   
857-227 7 Somerville MA   732H BARR TELL USA, INC. - MA 128   2015-12-31   
857-227 8 Somerville MA   756G WIDE VOICE, LLC - MA 128   2016-04-11   
857-228 A Watertown MA CMBRMAWA0MD  3370 CTC COMMUNICATIONS CORP. - MA 128      
857-228 0 Watertown MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2011-06-27   
857-228 1 Watertown MA   3370 CTC COMMUNICATIONS CORP. - MA 128   2001-09-24   
857-228 2 Watertown MA   4084 PAETEC COMMUNICATIONS, INC.- MA 128   2013-03-19   
857-228 3 Watertown MA   019F CBEYOND COMMUNICATIONS, LLC - MA 128   2010-03-15   
857-228 4 Watertown MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2014-03-21   
857-228 5 Watertown MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2014-03-21   
857-228 6 Watertown MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2015-02-23   
857-228 7 Watertown MA   268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2013-05-05   
857-228 8 Watertown MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2011-01-02   
857-228 9 Watertown MA   268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2013-05-05   
857-229 A Newton MA CMBRMAWA0MD  3370 CTC COMMUNICATIONS CORP. - MA 128      
857-229 0 Newton MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2012-11-18   
857-229 1 Newton MA   3370 CTC COMMUNICATIONS CORP. - MA 128   2001-11-05   
857-229 2 Newton MA   019F CBEYOND COMMUNICATIONS, LLC - MA 128   2010-03-15   
857-229 3 Newton MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2012-12-15   
857-229 4 Newton MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2013-01-01   
857-229 5 Newton MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2013-01-15   
857-229 6 Newton MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2016-12-14   
857-229 7 Newton MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2012-10-05   
857-229 8 Newton MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2012-11-01   
857-229 9 Newton MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2012-12-01   
857-230 A Roxbury MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 128   2009-06-14   
857-230 0 Roxbury MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2010-05-24   
857-230 1 Roxbury MA   6664 SPRINT SPECTRUM L.P. 128   2011-12-09   
857-230 2 Roxbury MA   6664 SPRINT SPECTRUM L.P. 128   2011-12-09   
857-230 3 Roxbury MA   6664 SPRINT SPECTRUM L.P. 128   2012-01-31   
857-230 4 Roxbury MA   6664 SPRINT SPECTRUM L.P. 128   2012-01-31   
857-230 5 Roxbury MA   6664 SPRINT SPECTRUM L.P. 128   2012-01-31   
857-230 6 Roxbury MA   6664 SPRINT SPECTRUM L.P. 128   2012-05-06   
857-230 7 Roxbury MA   6664 SPRINT SPECTRUM L.P. 128   2012-05-06   
857-230 8 Roxbury MA   6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 128   2012-08-17   
857-230 9 Roxbury MA   6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 128   2009-06-14   
857-231 A Newton MA WLPLMAALCM1  6664 SPRINT SPECTRUM L.P. 128      
857-232 A Newton MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2006-07-01   
857-232 0 Newton MA   892D ONVOY, LLC - MA 128   2006-07-01   
857-232 1 Newton MA   892D ONVOY, LLC - MA 128   2012-06-01   
857-232 2 Newton MA   892D ONVOY, LLC - MA 128   2012-06-01   
857-232 3 Newton MA   892D ONVOY, LLC - MA 128   2012-06-01   
857-232 4 Newton MA   892D ONVOY, LLC - MA 128   2012-06-01   
857-232 5 Newton MA   892D ONVOY, LLC - MA 128   2012-06-01   
857-232 6 Newton MA   892D ONVOY, LLC - MA 128   2012-06-01   
857-232 7 Newton MA   892D ONVOY, LLC - MA 128   2012-06-01   

<< 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: Thu, 10 Sep 2020 02:15:24 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.