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 |
| 857-365
| 1 |
Boston |
MA |
CMBRMABEVMD |
478J NUSO, LLC |
128 |
|
2020-07-26 |
|
| 857-365
| 2 |
Boston |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-07-10 |
|
| 857-365
| 3 |
Boston |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-07-10 |
|
| 857-365
| 4 |
Boston |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-07-10 |
|
| 857-365
| 5 |
Boston |
MA |
CMBRMABENMD |
624H ONVOY SPECTRUM, LLC |
128 |
|
2021-04-05 |
|
| 857-365
| 6 |
Boston |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2020-10-03 |
|
| 857-365
| 7 |
Boston |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-07-10 |
|
| 857-365
| 8 |
Boston |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2022-08-06 |
|
| 857-365
| 9 |
Boston |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2022-10-03 |
|
| 857-366
| A |
Boston |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
|
|
| 857-366
| 0 |
Boston |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
2006-05-06 |
|
| 857-366
| 1 |
Boston |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
2006-05-06 |
|
| 857-366
| 2 |
Boston |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
2006-05-06 |
|
| 857-366
| 3 |
Boston |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
2014-05-01 |
|
| 857-366
| 4 |
Boston |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
2008-04-10 |
|
| 857-366
| 5 |
Boston |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
2006-06-30 |
|
| 857-366
| 6 |
Boston |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
2006-06-30 |
|
| 857-366
| 7 |
Boston |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
2007-12-03 |
|
| 857-366
| 8 |
Boston |
MA |
CATNMAAKPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
128 |
|
2007-06-08 |
|
| 857-366
| 9 |
Boston |
MA |
CATNMAAKPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
128 |
|
2007-06-08 |
|
| 857-367
| A |
Watertown |
MA |
CMBRMA01DS5 |
7135 TC SYSTEMS, INC. |
128 |
|
|
|
| 857-367
| 0 |
Watertown |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-03-06 |
|
| 857-367
| 1 |
Watertown |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-03-06 |
|
| 857-367
| 2 |
Watertown |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-03-06 |
|
| 857-367
| 3 |
Watertown |
MA |
CMBRMABENMD |
624H ONVOY SPECTRUM, LLC |
128 |
|
2024-12-06 |
|
| 857-367
| 4 |
Watertown |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-04-06 |
|
| 857-367
| 5 |
Watertown |
MA |
CMBRMABENMD |
624H ONVOY SPECTRUM, LLC |
128 |
|
2021-04-15 |
|
| 857-367
| 6 |
Watertown |
MA |
CMBRMA01DS5 |
7135 TC SYSTEMS, INC. |
128 |
|
2020-12-07 |
|
| 857-367
| 7 |
Watertown |
MA |
CMBRMA01DS5 |
7135 TC SYSTEMS, INC. |
128 |
|
2021-02-26 |
|
| 857-367
| 8 |
Watertown |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-04-06 |
|
| 857-367
| 9 |
Watertown |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2021-04-06 |
|
| 857-368
| A |
Boston |
MA |
|
829J PAETEC ITEL, LLC |
128 |
|
|
|
| 857-368
| 0 |
Boston |
MA |
|
4084 PAETEC COMMUNICATIONS, INC. - MA |
128 |
|
2011-10-02 |
|
| 857-368
| 1 |
Boston |
MA |
|
4084 PAETEC COMMUNICATIONS, INC. - MA |
128 |
|
2011-10-02 |
|
| 857-368
| 2 |
Boston |
MA |
|
4084 PAETEC COMMUNICATIONS, INC. - MA |
128 |
|
2011-10-02 |
|
| 857-368
| 3 |
Boston |
MA |
|
4084 PAETEC COMMUNICATIONS, INC. - MA |
128 |
|
2011-10-02 |
|
| 857-368
| 4 |
Boston |
MA |
|
4084 PAETEC COMMUNICATIONS, INC. - MA |
128 |
|
2011-10-02 |
|
| 857-368
| 5 |
Boston |
MA |
|
4084 PAETEC COMMUNICATIONS, INC. - MA |
128 |
|
2011-10-02 |
|
| 857-368
| 6 |
Boston |
MA |
|
4084 PAETEC COMMUNICATIONS, INC. - MA |
128 |
|
2011-10-02 |
|
| 857-368
| 7 |
Boston |
MA |
|
4084 PAETEC COMMUNICATIONS, INC. - MA |
128 |
|
2011-10-02 |
|
| 857-368
| 8 |
Boston |
MA |
|
4084 PAETEC COMMUNICATIONS, INC. - MA |
128 |
|
2011-10-02 |
|
| 857-368
| 9 |
Boston |
MA |
|
4084 PAETEC COMMUNICATIONS, INC. - MA |
128 |
|
2011-10-02 |
|
| 857-369
| A |
Boston |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
|
|
| 857-369
| 0 |
Boston |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
2021-02-23 |
|
| 857-369
| 1 |
Boston |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
2021-02-23 |
|
| 857-369
| 2 |
Boston |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
2021-02-23 |
|
| 857-369
| 3 |
Boston |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
2021-02-23 |
|
| 857-369
| 4 |
Boston |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
2021-02-23 |
|
| 857-369
| 5 |
Boston |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
2021-02-23 |
|
| 857-369
| 6 |
Boston |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
2021-02-23 |
|
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Last updated: Sat, 02 May 2026 12:20:53 UTC
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