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 |
| 857-304
| 5 |
Watertown |
MA |
CMBRMA01DS5 |
7135 TC SYSTEMS, INC. |
128 |
|
2014-10-27 |
|
| 857-304
| 6 |
Watertown |
MA |
CMBRMA01DS5 |
7135 TC SYSTEMS, INC. |
128 |
|
2015-06-22 |
|
| 857-304
| 7 |
Watertown |
MA |
BSTPMALL5MD |
508J CENTURYLINK COMMUNICATIONS, LLC |
128 |
|
2014-04-24 |
|
| 857-304
| 8 |
Watertown |
MA |
CMBRMA01DS5 |
7135 TC SYSTEMS, INC. |
128 |
|
2015-04-20 |
|
| 857-304
| 9 |
Watertown |
MA |
SOVLMAABDS2 |
268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA |
128 |
|
2015-06-07 |
|
| 857-305
| A |
Boston |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
|
|
| 857-305
| 0 |
Boston |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
2014-05-23 |
|
| 857-305
| 1 |
Boston |
MA |
|
829J PAETEC ITEL, LLC |
128 |
|
2014-04-17 |
|
| 857-305
| 2 |
Boston |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
2013-09-19 |
|
| 857-305
| 3 |
Boston |
MA |
NWTNMAWAVMD |
318J COMCAST IP PHONE, LLC |
128 |
|
2013-10-31 |
|
| 857-305
| 4 |
Boston |
MA |
|
829J PAETEC ITEL, LLC |
128 |
|
2013-11-14 |
|
| 857-305
| 5 |
Boston |
MA |
|
829J PAETEC ITEL, LLC |
128 |
|
2013-11-14 |
|
| 857-305
| 6 |
Boston |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2014-09-26 |
|
| 857-305
| 7 |
Boston |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2014-09-26 |
|
| 857-305
| 8 |
Boston |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
2014-05-09 |
|
| 857-305
| 9 |
Boston |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
2014-05-09 |
|
| 857-306
| A |
Boston |
MA |
BSTPMALL5MD |
508J CENTURYLINK COMMUNICATIONS, LLC |
128 |
|
|
|
| 857-306
| 0 |
Boston |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
2017-12-08 |
|
| 857-306
| 1 |
Boston |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
2017-12-08 |
|
| 857-306
| 2 |
Boston |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
2017-12-08 |
|
| 857-306
| 3 |
Boston |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
2017-12-08 |
|
| 857-306
| 4 |
Boston |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
2017-12-08 |
|
| 857-306
| 5 |
Boston |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
2017-12-08 |
|
| 857-306
| 6 |
Boston |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
2017-12-08 |
|
| 857-306
| 7 |
Boston |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
2017-12-08 |
|
| 857-306
| 8 |
Boston |
MA |
CMBRMAORDSG |
4018 LEVEL 3 COMMUNICATIONS, LLC - MA |
128 |
|
2017-12-08 |
|
| 857-306
| 9 |
Boston |
MA |
BSTPMALL5MD |
508J CENTURYLINK COMMUNICATIONS, LLC |
128 |
|
2017-12-08 |
|
| 857-307
| A |
Brookline |
MA |
BKLIMAMADS1 |
9102 VERIZON NEW ENGLAND INC. |
128 |
|
|
|
| 857-307
| 0 |
Brookline |
MA |
BKLIMAMADS1 |
9102 VERIZON NEW ENGLAND INC. |
128 |
|
2006-04-03 |
|
| 857-307
| 1 |
Brookline |
MA |
BKLIMAMADS1 |
9102 VERIZON NEW ENGLAND INC. |
128 |
|
2006-04-03 |
|
| 857-307
| 2 |
Brookline |
MA |
BKLIMAMADS1 |
9102 VERIZON NEW ENGLAND INC. |
128 |
|
2006-04-03 |
|
| 857-307
| 3 |
Brookline |
MA |
BKLIMAMADS1 |
9102 VERIZON NEW ENGLAND INC. |
128 |
|
2006-04-03 |
|
| 857-307
| 4 |
Brookline |
MA |
BKLIMAMADS1 |
9102 VERIZON NEW ENGLAND INC. |
128 |
|
2006-04-03 |
|
| 857-307
| 5 |
Brookline |
MA |
BKLIMAMADS1 |
9102 VERIZON NEW ENGLAND INC. |
128 |
|
2006-04-03 |
|
| 857-307
| 6 |
Brookline |
MA |
BKLIMAMADS1 |
9102 VERIZON NEW ENGLAND INC. |
128 |
|
2006-04-03 |
|
| 857-307
| 7 |
Brookline |
MA |
BKLIMAMADS1 |
9102 VERIZON NEW ENGLAND INC. |
128 |
|
2006-04-03 |
|
| 857-307
| 8 |
Brookline |
MA |
BKLIMAMADS1 |
9102 VERIZON NEW ENGLAND INC. |
128 |
|
2006-04-03 |
|
| 857-307
| 9 |
Brookline |
MA |
BKLIMAMADS1 |
9102 VERIZON NEW ENGLAND INC. |
128 |
|
2006-04-03 |
|
| 857-308
| A |
Roxbury |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
|
|
| 857-308
| 0 |
Roxbury |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2015-08-24 |
|
| 857-308
| 1 |
Roxbury |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
2015-08-24 |
|
| 857-308
| 2 |
Roxbury |
MA |
BSTNMABLOMD |
990E BANDWIDTH.COM CLEC, LLC - MA |
128 |
|
2015-05-17 |
|
| 857-308
| 3 |
Roxbury |
MA |
NWTNMAWAVMD |
318J COMCAST IP PHONE, LLC |
128 |
|
2014-11-17 |
|
| 857-308
| 4 |
Roxbury |
MA |
BSTNMABLOMD |
990E BANDWIDTH.COM CLEC, LLC - MA |
128 |
|
2015-05-17 |
|
| 857-308
| 5 |
Roxbury |
MA |
CMBRMABEQMD |
321J HD CARRIER LLC |
128 |
|
2015-06-19 |
|
| 857-308
| 6 |
Roxbury |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2014-11-14 |
|
| 857-308
| 7 |
Roxbury |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2014-11-14 |
|
| 857-308
| 8 |
Roxbury |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2014-11-14 |
|
| 857-308
| 9 |
Roxbury |
MA |
NRTNMAAACM4 |
6889 OMNIPOINT MIAMI E LICENSE, LLC |
128 |
|
2014-11-14 |
|
| 857-309
| A |
Dorchester |
MA |
BSTPMALLDS3 |
892D ONVOY, LLC - MA |
128 |
|
|
|
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Last updated: Sat, 02 May 2026 12:20:53 UTC
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