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 |
| 857-346
| 6 |
Boston |
MA |
NRTNMAAACM4 |
5562 METROPCS, INC. |
128 |
|
2018-08-02 |
|
| 857-346
| 7 |
Boston |
MA |
NRTNMAAACM4 |
5562 METROPCS, INC. |
128 |
|
2018-08-02 |
|
| 857-346
| 8 |
Boston |
MA |
NRTNMAAACM4 |
5562 METROPCS, INC. |
128 |
|
2018-08-02 |
|
| 857-346
| 9 |
Boston |
MA |
NRTNMAAACM4 |
5562 METROPCS, INC. |
128 |
|
2018-08-02 |
|
| 857-347
| A |
Boston |
MA |
BSTPMALLVMD |
181J ADVANCED TELECOM SOLUTIONS, LLC |
128 |
|
|
|
| 857-347
| 0 |
Boston |
MA |
BSTPMALLVMD |
181J ADVANCED TELECOM SOLUTIONS, LLC |
128 |
|
2018-08-27 |
|
| 857-347
| 1 |
Boston |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2018-10-07 |
|
| 857-347
| 2 |
Boston |
MA |
CMBRMABE5MD |
551G NUSO, LLC |
128 |
|
2018-10-14 |
|
| 857-347
| 3 |
Boston |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2018-08-28 |
|
| 857-347
| 4 |
Boston |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2018-08-28 |
|
| 857-347
| 5 |
Boston |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2018-08-28 |
|
| 857-347
| 6 |
Boston |
MA |
CMBSMA01AMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
128 |
|
2018-08-28 |
|
| 857-347
| 7 |
Boston |
MA |
CMBSMA01AMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
128 |
|
2018-08-28 |
|
| 857-347
| 8 |
Boston |
MA |
CMBSMA01AMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
128 |
|
2018-08-28 |
|
| 857-347
| 9 |
Boston |
MA |
CMBSMA01AMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
128 |
|
2018-08-28 |
|
| 857-348
| A |
Boston |
MA |
CMBSMA01AMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
128 |
|
2024-12-29 |
|
| 857-348
| 0 |
Boston |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2018-10-07 |
|
| 857-348
| 1 |
Boston |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2024-11-13 |
|
| 857-348
| 2 |
Boston |
MA |
CMBRMABE5MD |
551G NUSO, LLC |
128 |
|
2018-10-14 |
|
| 857-348
| 3 |
Boston |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
2018-11-26 |
|
| 857-348
| 4 |
Boston |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
2018-11-26 |
|
| 857-348
| 5 |
Boston |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
2018-11-26 |
|
| 857-348
| 6 |
Boston |
MA |
CMBSMA01AMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
128 |
|
2018-09-27 |
|
| 857-348
| 7 |
Boston |
MA |
CMBSMA01AMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
128 |
|
2018-09-27 |
|
| 857-348
| 8 |
Boston |
MA |
CMBSMA01AMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
128 |
|
2018-09-27 |
|
| 857-348
| 9 |
Boston |
MA |
CMBSMA01AMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
128 |
|
2018-09-27 |
|
| 857-349
| A |
Winthrop |
MA |
BSTNMABLOMD |
990E BANDWIDTH.COM CLEC, LLC - MA |
128 |
|
|
|
| 857-349
| 0 |
Winthrop |
MA |
BSTNMABLOMD |
990E BANDWIDTH.COM CLEC, LLC - MA |
128 |
|
2018-11-22 |
|
| 857-349
| 1 |
Winthrop |
MA |
SOVLMAABDS2 |
268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA |
128 |
|
2019-03-06 |
|
| 857-349
| 2 |
Winthrop |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-04-06 |
|
| 857-349
| 4 |
Winthrop |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-03-07 |
|
| 857-349
| 5 |
Winthrop |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-03-07 |
|
| 857-349
| 6 |
Winthrop |
MA |
NWTNMAWAVMD |
318J COMCAST IP PHONE, LLC |
128 |
|
2019-05-10 |
|
| 857-349
| 7 |
Winthrop |
MA |
CMBRMABENMD |
624H ONVOY SPECTRUM, LLC |
128 |
|
2021-04-15 |
|
| 857-349
| 8 |
Winthrop |
MA |
BSTPMALLOMD |
073H TELNYX LLC |
128 |
|
2019-04-29 |
|
| 857-349
| 9 |
Winthrop |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2020-07-07 |
|
| 857-350
| A |
Boston |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
|
|
| 857-350
| 0 |
Boston |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
2007-08-09 |
|
| 857-350
| 1 |
Boston |
MA |
CATNMAAKPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
128 |
|
2007-09-07 |
|
| 857-350
| 2 |
Boston |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2007-11-16 |
|
| 857-350
| 3 |
Boston |
MA |
NWTNMAWAVMD |
318J COMCAST IP PHONE, LLC |
128 |
|
2007-10-01 |
|
| 857-350
| 4 |
Boston |
MA |
NWTNMAWAVMD |
318J COMCAST IP PHONE, LLC |
128 |
|
2007-10-01 |
|
| 857-350
| 5 |
Boston |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2007-11-16 |
|
| 857-350
| 6 |
Boston |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2007-11-16 |
|
| 857-350
| 7 |
Boston |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2007-11-16 |
|
| 857-350
| 8 |
Boston |
MA |
CATNMAAKPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
128 |
|
2007-12-07 |
|
| 857-350
| 9 |
Boston |
MA |
CATNMAAKPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
128 |
|
2007-12-07 |
|
| 857-351
| A |
Roxbury |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2024-07-01 |
|
| 857-351
| 0 |
Roxbury |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2024-09-22 |
|
| 857-351
| 1 |
Roxbury |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2024-09-22 |
|
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Last updated: Sun, 17 May 2026 03:26:51 UTC
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