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 |
| 857-383
| 4 |
Boston |
MA |
CMBRMA01DS5 |
7135 TC SYSTEMS, INC. |
128 |
|
2005-12-10 |
|
| 857-383
| 5 |
Boston |
MA |
CMBRMA01DS5 |
7135 TC SYSTEMS, INC. |
128 |
|
2005-12-10 |
|
| 857-383
| 6 |
Boston |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
2014-05-01 |
|
| 857-383
| 7 |
Boston |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
2014-05-01 |
|
| 857-383
| 8 |
Boston |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
2006-01-02 |
|
| 857-383
| 9 |
Boston |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
2006-01-02 |
|
| 857-384
| A |
Brighton |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
|
|
| 857-384
| 0 |
Brighton |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2021-10-24 |
|
| 857-384
| 1 |
Brighton |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2021-10-24 |
|
| 857-384
| 2 |
Brighton |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2022-03-26 |
|
| 857-384
| 3 |
Brighton |
MA |
CMBRMABENMD |
624H ONVOY SPECTRUM, LLC |
128 |
|
2022-02-11 |
|
| 857-384
| 4 |
Brighton |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-09-18 |
|
| 857-384
| 5 |
Brighton |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-09-18 |
|
| 857-384
| 6 |
Brighton |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-09-18 |
|
| 857-384
| 7 |
Brighton |
MA |
CMBRMABENMD |
624H ONVOY SPECTRUM, LLC |
128 |
|
2022-02-11 |
|
| 857-384
| 8 |
Brighton |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2021-10-24 |
|
| 857-384
| 9 |
Brighton |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2022-03-26 |
|
| 857-385
| A |
Dorchester |
MA |
CMBSMA01AMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
128 |
|
|
|
| 857-385
| 0 |
Dorchester |
MA |
CMBRMABEQMD |
321J HD CARRIER LLC |
128 |
|
2016-09-03 |
|
| 857-385
| 1 |
Dorchester |
MA |
CMBRMABEQMD |
321J HD CARRIER LLC |
128 |
|
2016-09-03 |
|
| 857-385
| 2 |
Dorchester |
MA |
CMBSMA01AMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
128 |
|
2023-04-15 |
|
| 857-385
| 3 |
Dorchester |
MA |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
128 |
|
2016-07-24 |
|
| 857-385
| 4 |
Dorchester |
MA |
CMBRMABEQMD |
321J HD CARRIER LLC |
128 |
|
2016-09-03 |
|
| 857-385
| 5 |
Dorchester |
MA |
CMBRMABEQMD |
321J HD CARRIER LLC |
128 |
|
2016-09-03 |
|
| 857-385
| 6 |
Dorchester |
MA |
CMBSMA01AMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
128 |
|
2016-07-23 |
|
| 857-385
| 7 |
Dorchester |
MA |
CMBRMABEQMD |
321J HD CARRIER LLC |
128 |
|
2016-09-03 |
|
| 857-385
| 8 |
Dorchester |
MA |
CMBSMA01AMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
128 |
|
2016-10-24 |
|
| 857-385
| 9 |
Dorchester |
MA |
CMBSMA01AMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
128 |
|
2016-10-24 |
|
| 857-386
| A |
Chelsea |
MA |
CHLSMACHDS0 |
9102 VERIZON NEW ENGLAND INC. |
128 |
|
|
|
| 857-386
| 0 |
Chelsea |
MA |
BSTPMALLOMD |
073H TELNYX LLC |
128 |
|
2017-04-28 |
|
| 857-386
| 1 |
Chelsea |
MA |
SOVLMAABDS2 |
268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA |
128 |
|
2018-10-30 |
|
| 857-386
| 2 |
Chelsea |
MA |
CHLSMACHDS0 |
9102 VERIZON NEW ENGLAND INC. |
128 |
|
2016-09-03 |
|
| 857-386
| 3 |
Chelsea |
MA |
CHLSMACHDS0 |
9102 VERIZON NEW ENGLAND INC. |
128 |
|
2016-09-03 |
|
| 857-386
| 4 |
Chelsea |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2020-06-21 |
|
| 857-386
| 5 |
Chelsea |
MA |
CHTWMABF2MD |
671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS |
128 |
|
2017-04-14 |
|
| 857-386
| 6 |
Chelsea |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2019-02-23 |
|
| 857-386
| 7 |
Chelsea |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2019-02-23 |
|
| 857-386
| 8 |
Chelsea |
MA |
SOVLMAABDS2 |
268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA |
128 |
|
2018-11-08 |
|
| 857-386
| 9 |
Chelsea |
MA |
|
515J IP HORIZON LLC |
128 |
|
2017-07-02 |
|
| 857-387
| A |
Quincy |
MA |
NWTNMAWAVMD |
318J COMCAST IP PHONE, LLC |
128 |
|
|
|
| 857-387
| 0 |
Quincy |
MA |
CMBSMA01AMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
128 |
|
2024-01-07 |
|
| 857-387
| 1 |
Quincy |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2024-02-25 |
|
| 857-387
| 2 |
Quincy |
MA |
NWTNMAWAVMD |
318J COMCAST IP PHONE, LLC |
128 |
|
2021-11-01 |
|
| 857-387
| 3 |
Quincy |
MA |
BSTNMABLOMD |
990E BANDWIDTH.COM CLEC, LLC - MA |
128 |
|
2022-11-17 |
|
| 857-387
| 4 |
Quincy |
MA |
BSTNMABLOMD |
990E BANDWIDTH.COM CLEC, LLC - MA |
128 |
|
2022-11-17 |
|
| 857-387
| 5 |
Quincy |
MA |
BSTNMABLOMD |
990E BANDWIDTH.COM CLEC, LLC - MA |
128 |
|
2022-11-17 |
|
| 857-387
| 6 |
Quincy |
MA |
SOVLMAABCMD |
516J TON80 COMMUNICATIONS, LLC |
128 |
|
2022-03-13 |
|
| 857-387
| 7 |
Quincy |
MA |
CMBRMABENMD |
624H ONVOY SPECTRUM, LLC |
128 |
|
2022-02-07 |
|
| 857-387
| 8 |
Quincy |
MA |
CMBRMABENMD |
624H ONVOY SPECTRUM, LLC |
128 |
|
2022-02-07 |
|
| 857-387
| 9 |
Quincy |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2024-02-25 |
|
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Last updated: Wed, 04 Mar 2026 03:00:52 UTC
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