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 |
| 857-991
| 6 |
Boston |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2003-12-02 |
|
| 857-991
| 7 |
Boston |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2003-12-02 |
|
| 857-991
| 8 |
Boston |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2004-08-09 |
|
| 857-991
| 9 |
Boston |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2003-12-13 |
|
| 857-994
| A |
Newton |
MA |
|
490J BOOST SUBSCRIBERCO L.L.C. |
128 |
|
2025-07-03 |
|
| 857-994
| 1 |
Newton |
MA |
|
490J BOOST SUBSCRIBERCO L.L.C. |
128 |
|
2025-10-23 |
|
| 857-995
| A |
Somerville |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
|
|
| 857-995
| 0 |
Somerville |
MA |
SOVLMACEDS0 |
9102 VERIZON NEW ENGLAND INC. |
128 |
|
2009-04-23 |
|
| 857-995
| 1 |
Somerville |
MA |
|
829J PAETEC ITEL, LLC |
128 |
|
2001-09-24 |
|
| 857-995
| 2 |
Somerville |
MA |
CMBRMABENMD |
624H ONVOY SPECTRUM, LLC |
128 |
|
2021-04-12 |
|
| 857-995
| 3 |
Somerville |
MA |
CMBSMA01AMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
128 |
|
2021-11-14 |
|
| 857-995
| 4 |
Somerville |
MA |
SOVLMAABDS2 |
268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA |
128 |
|
2021-10-06 |
|
| 857-995
| 5 |
Somerville |
MA |
CMBSMA01AMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
128 |
|
2022-11-20 |
|
| 857-995
| 6 |
Somerville |
MA |
BSTNMABLOMD |
990E BANDWIDTH.COM CLEC, LLC - MA |
128 |
|
2016-07-11 |
|
| 857-995
| 7 |
Somerville |
MA |
CMBSMA01AMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
128 |
|
2020-02-29 |
|
| 857-995
| 8 |
Somerville |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2016-03-30 |
|
| 857-995
| 9 |
Somerville |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2016-03-30 |
|
| 857-996
| A |
Boston |
MA |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
128 |
|
|
|
| 857-996
| 0 |
Boston |
MA |
|
7199 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA |
128 |
|
2007-10-14 |
|
| 857-996
| 1 |
Boston |
MA |
|
7199 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA |
128 |
|
2007-10-14 |
|
| 857-996
| 2 |
Boston |
MA |
|
7199 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA |
128 |
|
2007-10-14 |
|
| 857-996
| 3 |
Boston |
MA |
|
7199 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA |
128 |
|
2007-10-14 |
|
| 857-996
| 4 |
Boston |
MA |
|
7199 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA |
128 |
|
2007-10-14 |
|
| 857-996
| 5 |
Boston |
MA |
|
7199 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA |
128 |
|
2007-10-14 |
|
| 857-996
| 6 |
Boston |
MA |
|
7199 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA |
128 |
|
2007-10-14 |
|
| 857-996
| 7 |
Boston |
MA |
|
7199 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA |
128 |
|
2007-10-14 |
|
| 857-996
| 8 |
Boston |
MA |
|
7199 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA |
128 |
|
2007-10-14 |
|
| 857-996
| 9 |
Boston |
MA |
|
7199 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA |
128 |
|
2007-10-14 |
|
| 857-997
| A |
Somerville |
MA |
CMBRMABEQMD |
321J HD CARRIER LLC |
128 |
|
|
|
| 857-997
| 0 |
Somerville |
MA |
BSTNMABLOMD |
990E BANDWIDTH.COM CLEC, LLC - MA |
128 |
|
|
|
| 857-997
| 1 |
Somerville |
MA |
CMBRMABEQMD |
321J HD CARRIER LLC |
128 |
|
2016-09-03 |
|
| 857-997
| 2 |
Somerville |
MA |
BSTNMABLOMD |
990E BANDWIDTH.COM CLEC, LLC - MA |
128 |
|
|
|
| 857-997
| 3 |
Somerville |
MA |
|
515J IP HORIZON LLC |
128 |
|
|
|
| 857-997
| 4 |
Somerville |
MA |
CMBSMA01AMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
128 |
|
2017-08-18 |
|
| 857-997
| 5 |
Somerville |
MA |
CMBRMABEQMD |
321J HD CARRIER LLC |
128 |
|
2016-04-11 |
|
| 857-997
| 6 |
Somerville |
MA |
CMBRMABEQMD |
321J HD CARRIER LLC |
128 |
|
2016-04-11 |
|
| 857-997
| 7 |
Somerville |
MA |
CMBRMABEQMD |
321J HD CARRIER LLC |
128 |
|
2016-04-11 |
|
| 857-997
| 8 |
Somerville |
MA |
NWTNMAWAVMD |
318J COMCAST IP PHONE, LLC |
128 |
|
2017-11-18 |
|
| 857-997
| 9 |
Somerville |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2014-09-14 |
|
| 857-998
| A |
Cambridge |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
|
|
| 857-998
| 0 |
Cambridge |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
|
|
| 857-998
| 1 |
Cambridge |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
|
|
| 857-998
| 2 |
Cambridge |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
2006-04-01 |
|
| 857-998
| 3 |
Cambridge |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
2009-08-03 |
|
| 857-998
| 4 |
Cambridge |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
2005-10-07 |
|
| 857-998
| 5 |
Cambridge |
MA |
BSTNMABLOMD |
990E BANDWIDTH.COM CLEC, LLC - MA |
128 |
|
2022-11-18 |
|
| 857-998
| 6 |
Cambridge |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
2005-10-07 |
|
| 857-998
| 7 |
Cambridge |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
|
|
| 857-998
| 8 |
Cambridge |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
2005-09-21 |
|
| 857-998
| 9 |
Cambridge |
MA |
CATNMAAKAMD |
6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
128 |
|
|
|
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Last updated: Wed, 04 Mar 2026 03:00:52 UTC
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