Local Calling Guide
Area code/prefix search
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 74 75 76 77 >>
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 857-337
| 4 |
Brookline |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
2016-03-04 |
|
| 857-337
| 5 |
Brookline |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
2016-04-01 |
|
| 857-337
| 6 |
Brookline |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
2017-06-19 |
|
| 857-337
| 7 |
Brookline |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
2015-12-15 |
|
| 857-337
| 8 |
Brookline |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
2015-12-15 |
|
| 857-337
| 9 |
Brookline |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
2017-07-03 |
|
| 857-338
| A |
Boston |
MA |
BSTNMACODS0 |
7135 TC SYSTEMS, INC. |
128 |
|
|
|
| 857-338
| 0 |
Boston |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
2018-03-27 |
|
| 857-338
| 1 |
Boston |
MA |
NWTNMAWAVMD |
318J COMCAST IP PHONE, LLC |
128 |
|
2018-12-12 |
|
| 857-338
| 2 |
Boston |
MA |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
128 |
|
2018-03-27 |
|
| 857-338
| 3 |
Boston |
MA |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
128 |
|
2018-03-27 |
|
| 857-338
| 4 |
Boston |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
2018-12-19 |
|
| 857-338
| 5 |
Boston |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
2018-12-19 |
|
| 857-338
| 6 |
Boston |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
2018-12-19 |
|
| 857-338
| 7 |
Boston |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
2018-12-12 |
|
| 857-338
| 8 |
Boston |
MA |
BSTNMACODS0 |
7135 TC SYSTEMS, INC. |
128 |
|
2018-03-26 |
|
| 857-338
| 9 |
Boston |
MA |
BSTNMACODS0 |
7135 TC SYSTEMS, INC. |
128 |
|
2018-03-26 |
|
| 857-339
| A |
Roxbury |
MA |
SOVLMAAB6MD |
939H COMMIO, LLC |
128 |
|
2024-04-13 |
|
| 857-339
| 0 |
Roxbury |
MA |
SOVLMAAB6MD |
939H COMMIO, LLC |
128 |
|
2024-04-13 |
|
| 857-339
| 1 |
Roxbury |
MA |
SOVLMAAB6MD |
939H COMMIO, LLC |
128 |
|
2024-04-13 |
|
| 857-339
| 2 |
Roxbury |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2024-11-13 |
|
| 857-339
| 3 |
Roxbury |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2024-11-13 |
|
| 857-339
| 4 |
Roxbury |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2024-11-13 |
|
| 857-339
| 5 |
Roxbury |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2024-11-13 |
|
| 857-339
| 6 |
Roxbury |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2024-11-13 |
|
| 857-339
| 7 |
Roxbury |
MA |
CMBSMA01AMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
128 |
|
2024-12-31 |
|
| 857-339
| 8 |
Roxbury |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2024-06-10 |
|
| 857-339
| 9 |
Roxbury |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2024-06-10 |
|
| 857-340
| A |
Brookline |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
|
|
| 857-340
| 0 |
Brookline |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2020-12-06 |
|
| 857-340
| 1 |
Brookline |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2020-12-06 |
|
| 857-340
| 2 |
Brookline |
MA |
BSTPMALLOMD |
073H TELNYX LLC |
128 |
|
2021-03-04 |
|
| 857-340
| 3 |
Brookline |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2024-08-08 |
|
| 857-340
| 4 |
Brookline |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-03-12 |
|
| 857-340
| 5 |
Brookline |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-03-12 |
|
| 857-340
| 6 |
Brookline |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-03-12 |
|
| 857-340
| 7 |
Brookline |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2021-02-05 |
|
| 857-340
| 8 |
Brookline |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2021-02-05 |
|
| 857-340
| 9 |
Brookline |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2020-11-13 |
|
| 857-341
| A |
Belmont |
MA |
BSTNMABLOMD |
990E BANDWIDTH.COM CLEC, LLC - MA |
128 |
|
|
|
| 857-341
| 0 |
Belmont |
MA |
BSTNMABLOMD |
990E BANDWIDTH.COM CLEC, LLC - MA |
128 |
|
2019-04-11 |
|
| 857-341
| 1 |
Belmont |
MA |
BSTNMABLOMD |
990E BANDWIDTH.COM CLEC, LLC - MA |
128 |
|
2019-04-11 |
|
| 857-341
| 2 |
Belmont |
MA |
BSTPMALLXMD |
597F VOIP INNOVATIONS, LLC |
128 |
|
2019-07-22 |
|
| 857-341
| 3 |
Belmont |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2020-06-12 |
|
| 857-341
| 4 |
Belmont |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2020-06-12 |
|
| 857-341
| 5 |
Belmont |
MA |
CMBRMABENMD |
624H ONVOY SPECTRUM, LLC |
128 |
|
2021-04-05 |
|
| 857-341
| 6 |
Belmont |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-04-06 |
|
| 857-341
| 7 |
Belmont |
MA |
CMBRMABENMD |
624H ONVOY SPECTRUM, LLC |
128 |
|
2024-12-06 |
|
| 857-341
| 8 |
Belmont |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-03-07 |
|
| 857-341
| 9 |
Belmont |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-03-07 |
|
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Last updated: Sat, 02 May 2026 12:20:53 UTC
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