Local Calling Guide
Area code/prefix search
NPA: 301
[Rate centres in NPA 301]
[Dial plan for NPA 301]
<< 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 >>
NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
301-550
| A |
Washington Zone 10 |
MD |
BTVLMD18G00 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
|
|
301-550
| 0 |
Washington Zone 10 |
MD |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2022-09-10 |
|
301-550
| 1 |
Washington Zone 10 |
MD |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2022-09-10 |
|
301-550
| 2 |
Washington Zone 10 |
MD |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2022-10-15 |
|
301-550
| 3 |
Washington Zone 10 |
MD |
BTVLMD12CM9 |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2022-10-17 |
|
301-550
| 4 |
Washington Zone 10 |
MD |
BTVLMD127MD |
5562 METROPCS, INC. |
236 |
|
2022-11-14 |
|
301-550
| 5 |
Washington Zone 10 |
MD |
BTVLMD18G00 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2022-09-09 |
|
301-550
| 6 |
Washington Zone 10 |
MD |
BTVLMD18G00 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2022-09-09 |
|
301-550
| 7 |
Washington Zone 10 |
MD |
BTVLMD18G00 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2022-09-09 |
|
301-550
| 8 |
Washington Zone 10 |
MD |
BTVLMD18G00 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2022-09-09 |
|
301-550
| 9 |
Washington Zone 10 |
MD |
BTVLMD18G00 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2022-09-09 |
|
301-551
| A |
Washington Zone 3 |
MD |
VINNVACB2MD |
8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) |
236 |
|
|
|
301-552
| A |
Washington Zone 13 |
MD |
LNHMMDLNDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-553
| A |
Waldorf |
MD |
SLSPMDSSX6X |
6630 USA MOBILITY WIRELESS, INC. |
236 |
|
|
|
301-554
| A |
Washington Zone 2 |
MD |
SLSPMDSSX6X |
6630 USA MOBILITY WIRELESS, INC. |
236 |
|
|
|
301-556
| A |
Gaithersburg |
MD |
WASHDCTTDS0 |
7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC |
236 |
|
|
|
301-556
| 0 |
Gaithersburg |
MD |
WASHDCTTDS0 |
7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC |
236 |
|
|
|
301-556
| 1 |
Gaithersburg |
MD |
WASHDCTTDS0 |
7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC |
236 |
|
|
|
301-556
| 2 |
Gaithersburg |
MD |
WASHDCTTDS0 |
7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC |
236 |
|
|
|
301-556
| 3 |
Gaithersburg |
MD |
BTVLMD127MD |
5562 METROPCS, INC. |
236 |
|
2004-11-18 |
|
301-556
| 4 |
Gaithersburg |
MD |
WASHDCTTDS0 |
7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC |
236 |
|
|
|
301-556
| 5 |
Gaithersburg |
MD |
LARLMDCCDS0 |
4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD |
236 |
|
2004-05-06 |
|
301-556
| 6 |
Gaithersburg |
MD |
BTVLMD127MD |
5562 METROPCS, INC. |
236 |
|
2004-02-28 |
|
301-556
| 7 |
Gaithersburg |
MD |
BTVLMD127MD |
5562 METROPCS, INC. |
236 |
|
2004-02-28 |
|
301-556
| 8 |
Gaithersburg |
MD |
BTVLMD127MD |
5562 METROPCS, INC. |
236 |
|
2005-11-13 |
|
301-556
| 9 |
Gaithersburg |
MD |
WASHDCTTDS0 |
7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC |
236 |
|
|
|
301-557
| A |
Washington Zone 3 |
MD |
MCLNVA23DS4 |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
|
|
301-557
| 0 |
Washington Zone 3 |
MD |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2014-09-12 |
|
301-557
| 1 |
Washington Zone 3 |
MD |
MCLNVA23DS4 |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2011-10-29 |
|
301-557
| 2 |
Washington Zone 3 |
MD |
MCLNVA23DS4 |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2011-10-29 |
|
301-557
| 3 |
Washington Zone 3 |
MD |
MCLNVA23DS4 |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2011-10-29 |
|
301-557
| 4 |
Washington Zone 3 |
MD |
MCLNVA23DS4 |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2011-10-29 |
|
301-557
| 5 |
Washington Zone 3 |
MD |
MCLNVA23DS4 |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2011-10-29 |
|
301-557
| 6 |
Washington Zone 3 |
MD |
MCLNVA23DS4 |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2011-10-29 |
|
301-557
| 7 |
Washington Zone 3 |
MD |
MCLNVA23DS4 |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2011-10-29 |
|
301-557
| 8 |
Washington Zone 3 |
MD |
MCLNVA23DS4 |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2011-10-29 |
|
301-557
| 9 |
Washington Zone 3 |
MD |
ARTNVAARXDY |
318J COMCAST IP PHONE, LLC |
236 |
|
2013-09-08 |
|
301-558
| A |
Washington Zone 13 |
MD |
SLSPMDSSX6X |
6630 USA MOBILITY WIRELESS, INC. |
236 |
|
|
|
301-559
| A |
Washington Zone 4 |
MD |
HYVLMDCMDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-560
| A |
Washington Zone 4 |
MD |
CHCHMDBE6MD |
4716 PAETEC COMMUNICATIONS, INC. - MD |
236 |
|
|
|
301-561
| A |
Washington Zone 3 |
MD |
VINNVACB2MD |
8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) |
236 |
|
|
|
301-562
| A |
Washington Zone 3 |
MD |
SLSPMDSSDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-563
| A |
Washington Zone 3 |
MD |
SLSPMDSSDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-563
| 0 |
Washington Zone 3 |
MD |
SLSPMDSSDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-563
| 1 |
Washington Zone 3 |
MD |
SLSPMDSSDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-563
| 2 |
Washington Zone 3 |
MD |
SLSPMDSSDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-563
| 3 |
Washington Zone 3 |
MD |
SLSPMDSSDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-563
| 4 |
Washington Zone 3 |
MD |
SLSPMDSSDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-563
| 5 |
Washington Zone 3 |
MD |
SLSPMDSSDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-563
| 6 |
Washington Zone 3 |
MD |
SLSPMDSSDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
<< 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 >>
Last updated: Tue, 16 Apr 2024 01:38:01 UTC
Sponsored by: ISP Telecom
Like this site? We accept donations via PayPal.