Local Calling Guide
Area code/prefix search
NPA: 571
[Rate centres in NPA 571]
[Dial plan for NPA 571]
<< 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 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 >>
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 571-520
| 8 |
Herndon |
VA |
VINNVACBDS0 |
138E ONVOY, LLC - VA |
236 |
|
2020-10-03 |
|
| 571-520
| 9 |
Herndon |
VA |
VINNVACBDS0 |
138E ONVOY, LLC - VA |
236 |
|
2020-10-03 |
|
| 571-521
| A |
Herndon |
VA |
WASHDCSW01Z |
829J PAETEC ITEL, LLC |
236 |
|
2025-04-02 |
|
| 571-521
| 0 |
Herndon |
VA |
|
138E ONVOY, LLC - VA |
236 |
|
2026-09-12 |
|
| 571-521
| 1 |
Herndon |
VA |
WASHDCSW01Z |
829J PAETEC ITEL, LLC |
236 |
|
|
|
| 571-521
| 2 |
Herndon |
VA |
CHCHMDBEWMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2026-07-28 |
|
| 571-521
| 3 |
Herndon |
VA |
MCLNVA23DS4 |
8825 LEVEL 3 COMMUNICATIONS, LLC - VA |
236 |
|
2020-08-21 |
|
| 571-521
| 4 |
Herndon |
VA |
VINNVACBDS0 |
138E ONVOY, LLC - VA |
236 |
|
2024-12-13 |
|
| 571-521
| 5 |
Herndon |
VA |
|
6827 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA |
236 |
|
2026-09-30 |
|
| 571-521
| 6 |
Herndon |
VA |
WASHDCSW01Z |
829J PAETEC ITEL, LLC |
236 |
|
|
|
| 571-521
| 7 |
Herndon |
VA |
WASHDCINDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2006-03-07 |
|
| 571-521
| 8 |
Herndon |
VA |
MCLNVA23DS4 |
8825 LEVEL 3 COMMUNICATIONS, LLC - VA |
236 |
|
2006-05-11 |
|
| 571-521
| 9 |
Herndon |
VA |
WASKDCFNAMD |
6827 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA |
236 |
|
2006-04-27 |
|
| 571-522
| A |
Braddock |
VA |
CNVIVACTDS0 |
9213 VERIZON VIRGINIA, INC. |
236 |
|
|
|
| 571-522
| 0 |
Braddock |
VA |
WASLDCRGDS0 |
367E YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA |
236 |
|
2007-06-05 |
|
| 571-522
| 1 |
Braddock |
VA |
CNVIVACTDS0 |
9213 VERIZON VIRGINIA, INC. |
236 |
|
|
|
| 571-522
| 2 |
Braddock |
VA |
WASHDCSWXZZ |
829J PAETEC ITEL, LLC |
236 |
|
2006-04-10 |
|
| 571-522
| 3 |
Braddock |
VA |
WASLDCRGDS0 |
367E YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA |
236 |
|
2007-06-05 |
|
| 571-522
| 4 |
Braddock |
VA |
WASLDCRGDS0 |
367E YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA |
236 |
|
2007-06-05 |
|
| 571-522
| 5 |
Braddock |
VA |
CNVIVACTDS0 |
9213 VERIZON VIRGINIA, INC. |
236 |
|
|
|
| 571-522
| 6 |
Braddock |
VA |
CNVIVACTDS0 |
9213 VERIZON VIRGINIA, INC. |
236 |
|
|
|
| 571-522
| 7 |
Braddock |
VA |
WASLDCRGDS0 |
367E YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA |
236 |
|
2007-06-05 |
|
| 571-522
| 8 |
Braddock |
VA |
WASLDCRGDS0 |
367E YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA |
236 |
|
2007-06-05 |
|
| 571-522
| 9 |
Braddock |
VA |
WASLDCRGDS0 |
367E YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA |
236 |
|
2007-06-05 |
|
| 571-523
| A |
Herndon |
VA |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
|
|
| 571-523
| 0 |
Herndon |
VA |
ARTNVAARX8X |
551G NUSO, LLC |
236 |
|
2018-07-31 |
|
| 571-523
| 1 |
Herndon |
VA |
ARTNVAARXDY |
318J COMCAST IP PHONE, LLC |
236 |
|
2018-07-27 |
|
| 571-523
| 2 |
Herndon |
VA |
WASKDCFNPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2018-08-14 |
|
| 571-523
| 3 |
Herndon |
VA |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2018-09-20 |
|
| 571-523
| 4 |
Herndon |
VA |
MCLNVA23DS4 |
8825 LEVEL 3 COMMUNICATIONS, LLC - VA |
236 |
|
2018-09-09 |
|
| 571-523
| 5 |
Herndon |
VA |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2018-09-20 |
|
| 571-523
| 6 |
Herndon |
VA |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2018-09-20 |
|
| 571-523
| 7 |
Herndon |
VA |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2018-07-26 |
|
| 571-523
| 8 |
Herndon |
VA |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2018-07-26 |
|
| 571-523
| 9 |
Herndon |
VA |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2018-07-26 |
|
| 571-524
| A |
Herndon |
VA |
CHCHMDBEWMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
|
|
| 571-524
| 0 |
Herndon |
VA |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2015-08-19 |
|
| 571-524
| 1 |
Herndon |
VA |
CHCHMDBEWMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2014-12-28 |
|
| 571-524
| 2 |
Herndon |
VA |
CHCHMDBEWMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2014-12-28 |
|
| 571-524
| 3 |
Herndon |
VA |
CHCHMDBEWMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2014-12-28 |
|
| 571-524
| 4 |
Herndon |
VA |
CHCHMDBEWMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2014-12-28 |
|
| 571-524
| 5 |
Herndon |
VA |
CHCHMDBEWMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2014-12-28 |
|
| 571-524
| 6 |
Herndon |
VA |
CHCHMDBEWMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2014-12-28 |
|
| 571-524
| 7 |
Herndon |
VA |
CHCHMDBEWMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2014-12-28 |
|
| 571-524
| 8 |
Herndon |
VA |
CHCHMDBEWMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2014-12-28 |
|
| 571-524
| 9 |
Herndon |
VA |
CHCHMDBEWMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2014-12-28 |
|
| 571-525
| A |
Herndon |
VA |
ARTNVACY2MD |
726H AIRUS, INC. - VA |
236 |
|
|
|
| 571-525
| 0 |
Herndon |
VA |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2016-09-15 |
|
| 571-525
| 1 |
Herndon |
VA |
ARTNVACY2MD |
726H AIRUS, INC. - VA |
236 |
|
2015-11-13 |
|
| 571-525
| 2 |
Herndon |
VA |
ARTNVAARXDY |
318J COMCAST IP PHONE, LLC |
236 |
|
2016-09-01 |
|
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Last updated: Sat, 10 Oct 2026 15:24:20 UTC
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