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 |
301-809
| A |
Washington Zone 14 |
MD |
BOWIMDBODS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-809
| 0 |
Washington Zone 14 |
MD |
BOWIMDBODS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-809
| 1 |
Washington Zone 14 |
MD |
BOWIMDBODS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-809
| 2 |
Washington Zone 14 |
MD |
BOWIMDBODS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-809
| 3 |
Washington Zone 14 |
MD |
BOWIMDBODS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-809
| 4 |
Washington Zone 14 |
MD |
BOWIMDBODS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-809
| 5 |
Washington Zone 14 |
MD |
BOWIMDBODS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-809
| 6 |
Washington Zone 14 |
MD |
BOWIMDBODS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-809
| 7 |
Washington Zone 14 |
MD |
BTVLMD127MD |
5562 METROPCS, INC. |
236 |
|
2019-06-17 |
|
301-809
| 8 |
Washington Zone 14 |
MD |
BOWIMDBODS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-809
| 9 |
Washington Zone 14 |
MD |
BOWIMDBODS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-810
| A |
Buckeystown |
MD |
FRDRMDFRXPX |
624H ONVOY SPECTRUM, LLC |
240 |
|
|
|
301-810
| 0 |
Buckeystown |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
240 |
|
2004-03-26 |
|
301-810
| 1 |
Buckeystown |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
240 |
|
2018-06-16 |
|
301-810
| 2 |
Buckeystown |
MD |
FRDRMDFRXTX |
318J COMCAST IP PHONE, LLC |
240 |
|
2016-12-09 |
|
301-810
| 3 |
Buckeystown |
MD |
HGTWMDHGDMD |
071F BANDWIDTH.COM CLEC, LLC - MD |
240 |
|
2019-07-18 |
|
301-810
| 4 |
Buckeystown |
MD |
FRDRMDFRX7X |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
240 |
|
2004-09-13 |
|
301-810
| 5 |
Buckeystown |
MD |
FRDRMDFRXTX |
318J COMCAST IP PHONE, LLC |
240 |
|
2007-04-07 |
|
301-810
| 6 |
Buckeystown |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
240 |
|
2018-06-16 |
|
301-810
| 7 |
Buckeystown |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
240 |
|
2018-06-16 |
|
301-810
| 8 |
Buckeystown |
MD |
MRBGWVBUHPA |
4095 FIBERNET, LLC - WV |
240 |
|
2004-02-15 |
|
301-810
| 9 |
Buckeystown |
MD |
FRDRMDFRXPX |
624H ONVOY SPECTRUM, LLC |
240 |
|
2021-11-08 |
|
301-812
| A |
Washington Zone 15 (Baltimore LATA) |
MD |
NRBHMDNEDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
301-812
| 0 |
Washington Zone 15 (Baltimore LATA) |
MD |
NRBHMDNEDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
301-812
| 1 |
Washington Zone 15 (Baltimore LATA) |
MD |
NRBHMDNEDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
301-812
| 2 |
Washington Zone 15 (Baltimore LATA) |
MD |
NRBHMDNEDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
301-812
| 3 |
Washington Zone 15 (Baltimore LATA) |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2015-09-05 |
|
301-812
| 4 |
Washington Zone 15 (Baltimore LATA) |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2012-10-08 |
|
301-812
| 5 |
Washington Zone 15 (Baltimore LATA) |
MD |
BLTMMDCH14Z |
2697 CTC COMMUNICATIONS CORP. - MD |
238 |
|
2013-08-28 |
|
301-812
| 6 |
Washington Zone 15 (Baltimore LATA) |
MD |
BLTMMDSNDS6 |
281E YMAX COMMUNICATIONS CORP. - MD |
238 |
|
2013-11-26 |
|
301-812
| 7 |
Washington Zone 15 (Baltimore LATA) |
MD |
BLTMMDSNDS6 |
281E YMAX COMMUNICATIONS CORP. - MD |
238 |
|
2010-10-04 |
|
301-812
| 8 |
Washington Zone 15 (Baltimore LATA) |
MD |
BLTMMDCH25Z |
8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) |
238 |
|
2015-06-22 |
|
301-812
| 9 |
Washington Zone 15 (Baltimore LATA) |
MD |
HRNDVACKAMD |
1958 ATX TELECOMMUNICATIONS SERVICES, LTD. |
238 |
|
2004-01-31 |
|
301-813
| A |
Washington Zone 2 |
MD |
VINNVACB2MD |
8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) |
236 |
|
|
|
301-814
| A |
Washington Zone 2 |
MD |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
|
|
301-815
| A |
Frederick |
MD |
FRDRMDFRDS1 |
9212 VERIZON MARYLAND, INC. |
240 |
|
|
|
301-816
| A |
Washington Zone 11 |
MD |
RKVLMDMRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-817
| A |
Washington Zone 5 |
MD |
STLDMDSLDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-818
| A |
Waldorf |
MD |
WASHDCDP8MD |
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
|
|
301-819
| A |
Washington Zone 3 |
MD |
SLSPMDSSDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-820
| A |
Gaithersburg |
MD |
WASHDCTTDS0 |
7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC |
236 |
|
|
|
301-820
| 0 |
Gaithersburg |
MD |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2012-02-23 |
|
301-820
| 1 |
Gaithersburg |
MD |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2012-02-23 |
|
301-820
| 2 |
Gaithersburg |
MD |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2010-09-14 |
|
301-820
| 3 |
Gaithersburg |
MD |
WASHDCMTX7X |
2697 CTC COMMUNICATIONS CORP. - MD |
236 |
|
2011-05-27 |
|
301-820
| 4 |
Gaithersburg |
MD |
WASHDCTTDS0 |
7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC |
236 |
|
|
|
301-820
| 5 |
Gaithersburg |
MD |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2009-11-04 |
|
301-820
| 6 |
Gaithersburg |
MD |
WASHDCTTDS0 |
7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC |
236 |
|
|
|
301-820
| 7 |
Gaithersburg |
MD |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2011-06-17 |
|
301-820
| 8 |
Gaithersburg |
MD |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2012-02-23 |
|
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Last updated: Tue, 16 Apr 2024 01:38:01 UTC
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