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 |
| 857-421
| 5 |
Brookline |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2024-09-20 |
|
| 857-421
| 6 |
Brookline |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2025-09-19 |
|
| 857-421
| 7 |
Brookline |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2024-09-01 |
|
| 857-421
| 8 |
Brookline |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2024-09-01 |
|
| 857-421
| 9 |
Brookline |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2024-09-01 |
|
| 857-422
| A |
South Boston |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
|
|
| 857-422
| 0 |
South Boston |
MA |
BSTPMALLOMD |
073H TELNYX LLC |
128 |
|
2021-11-22 |
|
| 857-422
| 1 |
South Boston |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2024-03-07 |
|
| 857-422
| 2 |
South Boston |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-08-14 |
|
| 857-422
| 3 |
South Boston |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-08-14 |
|
| 857-422
| 4 |
South Boston |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-08-14 |
|
| 857-422
| 5 |
South Boston |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-08-14 |
|
| 857-422
| 6 |
South Boston |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2022-09-29 |
|
| 857-422
| 7 |
South Boston |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2022-09-29 |
|
| 857-422
| 8 |
South Boston |
MA |
CMBRMABENMD |
624H ONVOY SPECTRUM, LLC |
128 |
|
2021-11-27 |
|
| 857-422
| 9 |
South Boston |
MA |
CMBRMABENMD |
624H ONVOY SPECTRUM, LLC |
128 |
|
2021-11-27 |
|
| 857-423
| A |
Brookline |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
|
|
| 857-423
| 0 |
Brookline |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2020-08-01 |
|
| 857-423
| 1 |
Brookline |
MA |
|
829J PAETEC ITEL, LLC |
128 |
|
2020-02-28 |
|
| 857-423
| 2 |
Brookline |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2020-06-21 |
|
| 857-423
| 3 |
Brookline |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2020-06-21 |
|
| 857-423
| 4 |
Brookline |
MA |
CMBSMA01AMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
128 |
|
2020-05-02 |
|
| 857-423
| 5 |
Brookline |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2023-09-01 |
|
| 857-423
| 6 |
Brookline |
MA |
CMBSMA01AMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
128 |
|
2020-05-02 |
|
| 857-423
| 7 |
Brookline |
MA |
SOVLMAABDS2 |
268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA |
128 |
|
2020-04-13 |
|
| 857-423
| 8 |
Brookline |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2019-12-12 |
|
| 857-423
| 9 |
Brookline |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2019-10-27 |
|
| 857-424
| A |
Roxbury |
MA |
CMBSMA01AMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
128 |
|
|
|
| 857-424
| 0 |
Roxbury |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2019-07-01 |
|
| 857-424
| 1 |
Roxbury |
MA |
BSTPMALLOMD |
073H TELNYX LLC |
128 |
|
2017-03-13 |
|
| 857-424
| 2 |
Roxbury |
MA |
|
515J IP HORIZON LLC |
128 |
|
2017-07-06 |
|
| 857-424
| 3 |
Roxbury |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2019-07-01 |
|
| 857-424
| 4 |
Roxbury |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2019-09-20 |
|
| 857-424
| 5 |
Roxbury |
MA |
|
145J TERRA NOVA TELECOM INC. |
128 |
|
2025-10-17 |
|
| 857-424
| 6 |
Roxbury |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2017-08-18 |
|
| 857-424
| 7 |
Roxbury |
MA |
CMBSMA01AMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
128 |
|
2018-08-06 |
|
| 857-424
| 8 |
Roxbury |
MA |
CMBSMA01AMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
128 |
|
2016-12-16 |
|
| 857-424
| 9 |
Roxbury |
MA |
CMBSMA01AMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
128 |
|
2016-12-16 |
|
| 857-425
| A |
Brighton |
MA |
CMBSMA01AMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
128 |
|
|
|
| 857-425
| 0 |
Brighton |
MA |
SOVLMAAB3MD |
197D VONAGE AMERICA LLC |
128 |
|
2021-05-29 |
|
| 857-425
| 1 |
Brighton |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2019-02-23 |
|
| 857-425
| 2 |
Brighton |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2018-11-06 |
|
| 857-425
| 3 |
Brighton |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2018-11-06 |
|
| 857-425
| 4 |
Brighton |
MA |
|
829J PAETEC ITEL, LLC |
128 |
|
2018-08-28 |
|
| 857-425
| 5 |
Brighton |
MA |
CMBRMABENMD |
624H ONVOY SPECTRUM, LLC |
128 |
|
2021-04-05 |
|
| 857-425
| 6 |
Brighton |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2022-10-21 |
|
| 857-425
| 7 |
Brighton |
MA |
|
515J IP HORIZON LLC |
128 |
|
2017-07-02 |
|
| 857-425
| 8 |
Brighton |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2019-02-23 |
|
| 857-425
| 9 |
Brighton |
MA |
CMBSMA01AMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
128 |
|
2016-11-07 |
|
| 857-426
| A |
Brookline |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2024-12-28 |
|
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Last updated: Wed, 04 Mar 2026 03:00:52 UTC
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