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
857-258 9 Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128   2010-08-27   
857-259 A Cambridge MA CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128      
857-259 0 Cambridge MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2011-07-22   
857-259 1 Cambridge MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2011-08-01   
857-259 2 Cambridge MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2012-09-01   
857-259 3 Cambridge MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2011-08-14   
857-259 4 Cambridge MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2011-08-14   
857-259 5 Cambridge MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2011-09-01   
857-259 6 Cambridge MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2011-09-26   
857-259 7 Cambridge MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2012-05-31   
857-259 8 Cambridge MA CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2011-07-21   
857-259 9 Cambridge MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2013-06-01   
857-260 A Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-260 0 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2012-06-06   
857-260 1 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2014-07-01   
857-260 2 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2014-07-01   
857-260 3 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2014-07-01   
857-260 4 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2014-07-01   
857-260 5 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2015-05-06   
857-260 6 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2015-05-06   
857-260 7 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2014-11-01   
857-260 8 Boston MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2014-08-23   
857-260 9 Boston MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2012-08-17   
857-261 A Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128      
857-261 0 Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128   2011-04-22   
857-261 1 Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128   2011-04-22   
857-261 2 Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128   2011-04-22   
857-261 3 Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128   2011-04-22   
857-261 4 Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128   2011-04-22   
857-261 5 Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128   2011-04-22   
857-261 6 Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128   2011-04-22   
857-261 7 Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128   2011-04-22   
857-261 8 Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128   2011-04-22   
857-261 9 Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128   2011-04-22   
857-262 A Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-262 0 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2015-12-01   
857-262 1 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2015-12-01   
857-262 2 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2015-12-01   
857-262 3 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2015-12-01   
857-262 4 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2015-12-01   
857-262 5 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2015-12-01   
857-262 6 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2016-08-01   
857-262 7 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2016-08-01   
857-262 8 Boston MA   515J IP HORIZON LLC 128   2016-07-12   
857-262 9 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2016-08-01   
857-263 A Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-263 0 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2011-09-05   
857-263 1 Boston MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2014-08-23   
857-263 2 Boston MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2014-02-07   
857-263 3 Boston MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2014-02-16   
857-263 4 Boston MA CATNMAAKPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2011-09-11   
857-263 5 Boston MA CATNMAAKPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2011-09-11   
857-263 6 Boston MA CATNMAAKPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2011-09-11   
857-263 7 Boston MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2011-09-07   
857-263 8 Boston MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2011-09-07   
857-263 9 Boston MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-05-06   
857-264 A Boston MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-264 0 Boston MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2011-01-14   
857-264 1 Boston MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2011-01-14   
857-264 2 Boston MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2010-11-23   
857-264 3 Boston MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2010-11-23   
857-264 4 Boston MA   829J PAETEC ITEL, LLC 128   2011-01-06   
857-264 5 Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2011-03-13   
857-264 6 Boston MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2012-08-16   
857-264 7 Boston MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2010-12-03   
857-264 8 Boston MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2011-07-26   
857-264 9 Boston MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2011-07-26   
857-265 A Boston MA CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128      
857-265 0 Boston MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2012-09-06   
857-265 1 Boston MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2012-09-06   
857-265 2 Boston MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2012-09-21   
857-265 3 Boston MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2012-09-21   
857-265 4 Boston MA CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2011-09-05   
857-265 5 Boston MA CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2011-09-05   
857-265 6 Boston MA CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2011-09-05   
857-265 7 Boston MA   829J PAETEC ITEL, LLC 128   2012-08-20   
857-265 8 Boston MA CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2011-09-05   
857-265 9 Boston MA CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2011-09-05   
857-266 A Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128      
857-266 0 Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128   2010-08-01   
857-266 1 Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128   2010-08-01   
857-266 2 Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128   2010-08-01   
857-266 3 Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128   2010-08-01   
857-266 4 Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128   2010-08-01   
857-266 5 Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128   2010-08-01   
857-266 6 Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128   2010-08-01   
857-266 7 Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128   2010-08-01   
857-266 8 Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128   2010-08-01   
857-266 9 Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128   2010-08-01   
857-267 A Milton MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128      
857-267 0 Milton MA NRTNMAAACM4  5562 METROPCS, INC. 128   2013-08-30   
857-267 1 Milton MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2014-06-15   
857-267 2 Milton MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2013-09-14   
857-267 3 Milton MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2014-06-15   
857-267 4 Milton MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2014-01-19   
857-267 5 Milton MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2014-09-13   
857-267 6 Milton MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2015-02-23   
857-267 7 Milton MA BSTPMALL5MD  508J CENTURYLINK COMMUNICATIONS, LLC 128   2014-04-24   
857-267 8 Milton MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2014-12-30   
857-267 9 Milton MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2014-12-30   

<< 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: VoIP.ms

Like this site? We accept donations via PayPal.