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 |
| 857-416
| 4 |
Boston |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2023-06-26 |
|
| 857-416
| 5 |
Boston |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2023-07-21 |
|
| 857-416
| 6 |
Boston |
MA |
CHTWMABF2MD |
671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS |
128 |
|
2023-01-24 |
|
| 857-416
| 7 |
Boston |
MA |
CHTWMABF2MD |
671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS |
128 |
|
2023-01-24 |
|
| 857-416
| 8 |
Boston |
MA |
CHTWMABF2MD |
671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS |
128 |
|
2023-01-24 |
|
| 857-416
| 9 |
Boston |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2024-03-09 |
|
| 857-417
| A |
Boston |
MA |
NRTNMAAACM4 |
5562 METROPCS, INC. |
128 |
|
|
|
| 857-417
| 0 |
Boston |
MA |
NRTNMAAACM4 |
5562 METROPCS, INC. |
128 |
|
2008-12-01 |
|
| 857-417
| 1 |
Boston |
MA |
NRTNMAAACM4 |
5562 METROPCS, INC. |
128 |
|
2008-12-01 |
|
| 857-417
| 2 |
Boston |
MA |
NRTNMAAACM4 |
5562 METROPCS, INC. |
128 |
|
2008-12-01 |
|
| 857-417
| 3 |
Boston |
MA |
NRTNMAAACM4 |
5562 METROPCS, INC. |
128 |
|
2008-12-01 |
|
| 857-417
| 4 |
Boston |
MA |
NRTNMAAACM4 |
5562 METROPCS, INC. |
128 |
|
2008-12-01 |
|
| 857-417
| 5 |
Boston |
MA |
NRTNMAAACM4 |
5562 METROPCS, INC. |
128 |
|
2008-12-01 |
|
| 857-417
| 6 |
Boston |
MA |
NRTNMAAACM4 |
5562 METROPCS, INC. |
128 |
|
2008-12-01 |
|
| 857-417
| 7 |
Boston |
MA |
NRTNMAAACM4 |
5562 METROPCS, INC. |
128 |
|
2008-12-01 |
|
| 857-417
| 8 |
Boston |
MA |
NRTNMAAACM4 |
5562 METROPCS, INC. |
128 |
|
2008-12-01 |
|
| 857-417
| 9 |
Boston |
MA |
NRTNMAAACM4 |
5562 METROPCS, INC. |
128 |
|
2008-12-01 |
|
| 857-418
| A |
Dorchester |
MA |
CHTWMABF2MD |
671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS |
128 |
|
|
|
| 857-418
| 0 |
Dorchester |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2024-02-22 |
|
| 857-418
| 1 |
Dorchester |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2024-02-22 |
|
| 857-418
| 2 |
Dorchester |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2023-07-08 |
|
| 857-418
| 3 |
Dorchester |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2023-07-08 |
|
| 857-418
| 5 |
Dorchester |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2024-02-22 |
|
| 857-418
| 6 |
Dorchester |
MA |
CHTWMABF2MD |
671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS |
128 |
|
2023-01-24 |
|
| 857-418
| 8 |
Dorchester |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2024-02-22 |
|
| 857-418
| 9 |
Dorchester |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2024-02-22 |
|
| 857-419
| A |
Milton |
MA |
CMBSMA01AMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
128 |
|
|
|
| 857-419
| 0 |
Milton |
MA |
BSTPMALLOMD |
073H TELNYX LLC |
128 |
|
2017-04-26 |
|
| 857-419
| 1 |
Milton |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2023-08-17 |
|
| 857-419
| 2 |
Milton |
MA |
CMBRMABENMD |
624H ONVOY SPECTRUM, LLC |
128 |
|
2021-04-11 |
|
| 857-419
| 3 |
Milton |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-01-03 |
|
| 857-419
| 4 |
Milton |
MA |
SOVLMAABDS2 |
268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA |
128 |
|
2018-03-11 |
|
| 857-419
| 5 |
Milton |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-01-03 |
|
| 857-419
| 6 |
Milton |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-01-03 |
|
| 857-419
| 7 |
Milton |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2019-02-11 |
|
| 857-419
| 8 |
Milton |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2019-02-11 |
|
| 857-419
| 9 |
Milton |
MA |
CMBSMA01AMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
128 |
|
2016-10-10 |
|
| 857-420
| A |
Cambridge |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
|
|
| 857-420
| 0 |
Cambridge |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2024-02-22 |
|
| 857-420
| 4 |
Cambridge |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2023-01-26 |
|
| 857-420
| 5 |
Cambridge |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2023-01-26 |
|
| 857-420
| 6 |
Cambridge |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2023-01-26 |
|
| 857-420
| 7 |
Cambridge |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2023-01-26 |
|
| 857-420
| 8 |
Cambridge |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2023-01-26 |
|
| 857-421
| A |
Brookline |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2024-09-01 |
|
| 857-421
| 0 |
Brookline |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2024-09-20 |
|
| 857-421
| 1 |
Brookline |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2024-09-20 |
|
| 857-421
| 2 |
Brookline |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2024-09-20 |
|
| 857-421
| 3 |
Brookline |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2024-09-20 |
|
| 857-421
| 4 |
Brookline |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2024-09-20 |
|
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Last updated: Wed, 04 Mar 2026 03:00:52 UTC
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