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 |
| 857-597
| 0 |
Winthrop |
MA |
BSTPMALLOMD |
073H TELNYX LLC |
128 |
|
2021-06-04 |
|
| 857-597
| 1 |
Winthrop |
MA |
CMBRMABENMD |
624H ONVOY SPECTRUM, LLC |
128 |
|
2021-11-27 |
|
| 857-597
| 2 |
Winthrop |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-08-14 |
|
| 857-597
| 3 |
Winthrop |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-08-14 |
|
| 857-597
| 4 |
Winthrop |
MA |
SOVLMAABBMD |
145J TERRA NOVA TELECOM INC. |
128 |
|
2024-09-09 |
|
| 857-597
| 5 |
Winthrop |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-06-03 |
|
| 857-597
| 6 |
Winthrop |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2023-11-19 |
|
| 857-597
| 7 |
Winthrop |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-07-10 |
|
| 857-597
| 8 |
Winthrop |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-07-10 |
|
| 857-597
| 9 |
Winthrop |
MA |
CMBRMABENMD |
624H ONVOY SPECTRUM, LLC |
128 |
|
2021-11-27 |
|
| 857-598
| A |
Milton |
MA |
CATNMAAKPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
128 |
|
|
|
| 857-598
| 0 |
Milton |
MA |
CATNMAAKPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
128 |
|
|
|
| 857-598
| 1 |
Milton |
MA |
CATNMAAKPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
128 |
|
|
|
| 857-598
| 2 |
Milton |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
2005-02-10 |
|
| 857-598
| 3 |
Milton |
MA |
CATNMAAKPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
128 |
|
|
|
| 857-598
| 4 |
Milton |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
2003-09-10 |
|
| 857-598
| 5 |
Milton |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
2005-01-04 |
|
| 857-598
| 6 |
Milton |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
2011-08-27 |
|
| 857-598
| 7 |
Milton |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-01-03 |
|
| 857-598
| 8 |
Milton |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2010-03-15 |
|
| 857-598
| 9 |
Milton |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
2012-03-24 |
|
| 857-600
| A |
Cambridge |
MA |
BSTNMABLOMD |
990E BANDWIDTH.COM CLEC, LLC - MA |
128 |
|
|
|
| 857-600
| 0 |
Cambridge |
MA |
BSTNMABLOMD |
990E BANDWIDTH.COM CLEC, LLC - MA |
128 |
|
2011-06-05 |
|
| 857-600
| 1 |
Cambridge |
MA |
BSTNMABLOMD |
990E BANDWIDTH.COM CLEC, LLC - MA |
128 |
|
2011-06-05 |
|
| 857-600
| 2 |
Cambridge |
MA |
BSTNMABLOMD |
990E BANDWIDTH.COM CLEC, LLC - MA |
128 |
|
2011-06-05 |
|
| 857-600
| 3 |
Cambridge |
MA |
CATNMAAKPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
128 |
|
2011-06-07 |
|
| 857-600
| 4 |
Cambridge |
MA |
CATNMAAKPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
128 |
|
2011-06-07 |
|
| 857-600
| 5 |
Cambridge |
MA |
|
145J TERRA NOVA TELECOM INC. |
128 |
|
2025-08-29 |
|
| 857-600
| 6 |
Cambridge |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
2011-06-07 |
|
| 857-600
| 8 |
Cambridge |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
2011-06-07 |
|
| 857-600
| 9 |
Cambridge |
MA |
CMBSMA01AMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
128 |
|
2011-06-07 |
|
| 857-605
| A |
Brighton |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
|
|
| 857-605
| 0 |
Brighton |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2024-02-29 |
|
| 857-605
| 1 |
Brighton |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2024-10-18 |
|
| 857-605
| 2 |
Brighton |
MA |
BSTNMABLOMD |
990E BANDWIDTH.COM CLEC, LLC - MA |
128 |
|
2024-11-03 |
|
| 857-605
| 3 |
Brighton |
MA |
BSTNMABLOMD |
990E BANDWIDTH.COM CLEC, LLC - MA |
128 |
|
2024-11-03 |
|
| 857-605
| 4 |
Brighton |
MA |
|
5562 METROPCS, INC. |
128 |
|
2024-11-13 |
|
| 857-605
| 5 |
Brighton |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2025-10-31 |
|
| 857-605
| 6 |
Brighton |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2025-10-31 |
|
| 857-605
| 7 |
Brighton |
MA |
CMBRMABENMD |
624H ONVOY SPECTRUM, LLC |
128 |
|
2024-12-06 |
|
| 857-605
| 8 |
Brighton |
MA |
CMBRMABENMD |
624H ONVOY SPECTRUM, LLC |
128 |
|
2024-12-06 |
|
| 857-605
| 9 |
Brighton |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2023-11-25 |
|
| 857-615
| A |
Boston |
MA |
NRTNMAAACM4 |
5562 METROPCS, INC. |
128 |
|
|
|
| 857-615
| 0 |
Boston |
MA |
NRTNMAAACM4 |
5562 METROPCS, INC. |
128 |
|
2009-08-10 |
|
| 857-615
| 1 |
Boston |
MA |
NRTNMAAACM4 |
5562 METROPCS, INC. |
128 |
|
2009-08-10 |
|
| 857-615
| 2 |
Boston |
MA |
NRTNMAAACM4 |
5562 METROPCS, INC. |
128 |
|
2009-08-10 |
|
| 857-615
| 3 |
Boston |
MA |
NRTNMAAACM4 |
5562 METROPCS, INC. |
128 |
|
2009-08-10 |
|
| 857-615
| 4 |
Boston |
MA |
NRTNMAAACM4 |
5562 METROPCS, INC. |
128 |
|
2009-08-10 |
|
| 857-615
| 5 |
Boston |
MA |
NRTNMAAACM4 |
5562 METROPCS, INC. |
128 |
|
2009-08-10 |
|
| 857-615
| 6 |
Boston |
MA |
NRTNMAAACM4 |
5562 METROPCS, INC. |
128 |
|
2009-08-10 |
|
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Last updated: Wed, 04 Mar 2026 03:00:52 UTC
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