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 |
301-228
| 2 |
Frederick |
MD |
FRDRMDFRDS1 |
9212 VERIZON MARYLAND, INC. |
240 |
|
|
|
301-228
| 3 |
Frederick |
MD |
FRDRMDFRDS1 |
9212 VERIZON MARYLAND, INC. |
240 |
|
|
|
301-228
| 4 |
Frederick |
MD |
FRDRMDFRDS1 |
9212 VERIZON MARYLAND, INC. |
240 |
|
|
|
301-228
| 5 |
Frederick |
MD |
FRDRMDFRDS1 |
9212 VERIZON MARYLAND, INC. |
240 |
|
|
|
301-228
| 6 |
Frederick |
MD |
FRDRMDFRDS1 |
9212 VERIZON MARYLAND, INC. |
240 |
|
|
|
301-228
| 7 |
Frederick |
MD |
FRDRMDFRDS1 |
9212 VERIZON MARYLAND, INC. |
240 |
|
|
|
301-228
| 8 |
Frederick |
MD |
FRDRMDFRDS1 |
9212 VERIZON MARYLAND, INC. |
240 |
|
|
|
301-228
| 9 |
Frederick |
MD |
FRDRMDFRXTX |
318J COMCAST IP PHONE, LLC |
240 |
|
2018-01-01 |
|
301-229
| A |
Washington Zone 2 |
MD |
BTHSMDWADS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-230
| A |
Washington Zone 11 |
MD |
RKVLMDMRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-231
| A |
Washington Zone 11 |
MD |
RKVLMDMRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-231
| 0 |
Washington Zone 11 |
MD |
RKVLMDMRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-231
| 1 |
Washington Zone 11 |
MD |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2014-09-01 |
|
301-231
| 2 |
Washington Zone 11 |
MD |
RKVLMDMRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-231
| 3 |
Washington Zone 11 |
MD |
RKVLMDMRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-231
| 4 |
Washington Zone 11 |
MD |
RKVLMDMRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-231
| 5 |
Washington Zone 11 |
MD |
RKVLMDMRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-231
| 6 |
Washington Zone 11 |
MD |
RKVLMDMRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-231
| 7 |
Washington Zone 11 |
MD |
RKVLMDMRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-231
| 8 |
Washington Zone 11 |
MD |
RKVLMDMRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-231
| 9 |
Washington Zone 11 |
MD |
RKVLMDMRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-232
| A |
Ashton |
MD |
WASKDCFNPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
|
|
301-232
| 0 |
Ashton |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2004-03-26 |
|
301-232
| 1 |
Ashton |
MD |
TYCRVA03AMD |
2589 US LEC OF MARYLAND, INC. |
236 |
|
2003-03-11 |
|
301-232
| 2 |
Ashton |
MD |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2014-11-08 |
|
301-232
| 3 |
Ashton |
MD |
WASHDCDP8MD |
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2014-05-30 |
|
301-232
| 4 |
Ashton |
MD |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2016-02-06 |
|
301-232
| 5 |
Ashton |
MD |
CHCHMDBE6MD |
4716 PAETEC COMMUNICATIONS, INC. - MD |
236 |
|
2006-02-22 |
|
301-232
| 6 |
Ashton |
MD |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2016-02-06 |
|
301-232
| 7 |
Ashton |
MD |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2014-11-08 |
|
301-232
| 8 |
Ashton |
MD |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2014-11-08 |
|
301-232
| 9 |
Ashton |
MD |
WASKDCFNPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
|
|
301-233
| A |
Washington Zone 3 |
MD |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
|
|
301-234
| A |
Washington Zone 16 |
MD |
ALTWMDATRP0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-234
| 0 |
Washington Zone 16 |
MD |
ALTWMDATRP0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-234
| 1 |
Washington Zone 16 |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2019-04-22 |
|
301-234
| 2 |
Washington Zone 16 |
MD |
WASHDCSWMMD |
624H ONVOY SPECTRUM, LLC |
236 |
|
2021-12-09 |
|
301-234
| 3 |
Washington Zone 16 |
MD |
HRNDVACKBMD |
5978 BROADVIEW NETWORKS OF VIRGINIA, INC. - VA |
236 |
|
2017-10-06 |
|
301-234
| 4 |
Washington Zone 16 |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2018-10-23 |
|
301-234
| 5 |
Washington Zone 16 |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2019-04-22 |
|
301-234
| 6 |
Washington Zone 16 |
MD |
MCLNVA23DS4 |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2008-05-16 |
|
301-234
| 7 |
Washington Zone 16 |
MD |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2018-09-13 |
|
301-234
| 8 |
Washington Zone 16 |
MD |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2018-09-13 |
|
301-234
| 9 |
Washington Zone 16 |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2019-04-22 |
|
301-235
| A |
Washington Zone 16 |
MD |
WASHDCINDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
|
|
301-235
| 0 |
Washington Zone 16 |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2004-03-26 |
|
301-235
| 1 |
Washington Zone 16 |
MD |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2019-02-19 |
|
301-235
| 2 |
Washington Zone 16 |
MD |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2018-06-08 |
|
301-235
| 3 |
Washington Zone 16 |
MD |
WASHDCINDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2015-09-02 |
|
301-235
| 4 |
Washington Zone 16 |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2018-10-23 |
|
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Last updated: Fri, 22 Mar 2024 03:02:44 UTC
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