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
857-930 1 Boston MA   6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 128   2014-10-06   
857-930 2 Boston MA   892D ONVOY, LLC - MA 128   2014-10-22   
857-930 3 Boston MA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2014-09-22   
857-930 4 Boston MA   393H RCLEC, INC. - MA 128   2014-08-08   
857-930 5 Boston MA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2014-09-22   
857-930 6 Boston MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2015-09-01   
857-930 7 Boston MA   892D ONVOY, LLC - MA 128   2015-07-27   
857-930 8 Boston MA   6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 128   2014-10-06   
857-930 9 Boston MA   6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 128   2014-10-06   
857-931 A Boston MA CMBRMABE02T  9102 VERIZON NEW ENGLAND INC. 128      
857-939 A Quincy MA WRXBMAWACM3  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-939 0 Quincy MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-939 1 Quincy MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2006-03-04   
857-939 2 Quincy MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2008-03-15   
857-939 3 Quincy MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2008-11-03   
857-939 4 Quincy MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2010-01-16   
857-939 5 Quincy MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2012-09-01   
857-939 6 Quincy MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2011-11-03   
857-939 7 Quincy MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2013-08-01   
857-939 8 Quincy MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-939 9 Quincy MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-957 A Boston MA   756G WIDE VOICE, LLC - MA 128      
857-957 0 Boston MA   6101 COMCAST PHONE OF MASSACHUSETTS, INC. - MA 128   2015-08-24   
857-957 1 Boston MA   756G WIDE VOICE, LLC - MA 128   2014-11-21   
857-957 2 Boston MA   892D ONVOY, LLC - MA 128   2015-07-27   
857-957 3 Boston MA   7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128   2015-07-08   
857-957 4 Boston MA   892D ONVOY, LLC - MA 128   2015-07-27   
857-957 5 Boston MA   892D ONVOY, LLC - MA 128   2015-07-27   
857-957 6 Boston MA   892D ONVOY, LLC - MA 128   2015-07-27   
857-957 7 Boston MA   892D ONVOY, LLC - MA 128   2015-07-27   
857-957 8 Boston MA   966G LOCAL ACCESS LLC - MA 128   2016-06-26   
857-957 9 Boston MA   892D ONVOY, LLC - MA 128   2015-07-27   
857-971 A Charlestown MA   892D ONVOY, LLC - MA 128      
857-971 0 Charlestown MA   6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 128   2017-05-18   
857-971 1 Charlestown MA   6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 128   2016-06-17   
857-971 2 Charlestown MA   7135 TC SYSTEMS, INC. 128   2016-06-20   
857-971 3 Charlestown MA   892D ONVOY, LLC - MA 128   2016-08-05   
857-971 4 Charlestown MA   892D ONVOY, LLC - MA 128   2016-08-05   
857-971 5 Charlestown MA   892D ONVOY, LLC - MA 128   2016-06-08   
857-971 6 Charlestown MA   892D ONVOY, LLC - MA 128   2016-06-08   
857-971 7 Charlestown MA   892D ONVOY, LLC - MA 128   2016-06-08   
857-971 8 Charlestown MA   892D ONVOY, LLC - MA 128   2016-08-05   
857-971 9 Charlestown MA   966G LOCAL ACCESS LLC - MA 128   2017-07-02   
857-972 A Boston MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
857-972 0 Boston MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2015-11-01   
857-972 1 Boston MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2015-11-01   
857-972 2 Boston MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2015-10-02   
857-972 3 Boston MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2015-10-02   
857-972 4 Boston MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2015-11-01   
857-972 5 Boston MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2016-06-15   

<< 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: Execulink Telecom

Like this site? We accept donations via PayPal.