Local Calling Guide
Area code/prefix search
NPA: 857
[Rate centres in NPA 857]
[Dial plan for NPA 857]
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| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 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 |
|
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Last updated: Tue, 16 Jun 2026 00:09:45 UTC
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