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 |
301-318
| 9 |
Washington Zone 2 |
MD |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
|
|
301-319
| A |
Washington Zone 2 |
MD |
BTHSMDWWDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-320
| A |
Washington Zone 2 |
MD |
BTHSMDWADS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-321
| A |
Washington Zone 11 |
MD |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
|
|
301-321
| 0 |
Washington Zone 11 |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2018-06-16 |
|
301-321
| 1 |
Washington Zone 11 |
MD |
SLSPMD913MD |
939H COMMIO, LLC |
236 |
|
2021-08-29 |
|
301-321
| 2 |
Washington Zone 11 |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2018-06-16 |
|
301-321
| 3 |
Washington Zone 11 |
MD |
HRNDVACKBMD |
5977 BROADVIEW NETWORKS, INC. - DC |
236 |
|
2014-06-09 |
|
301-321
| 4 |
Washington Zone 11 |
MD |
WASHDCINDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2016-09-01 |
|
301-321
| 5 |
Washington Zone 11 |
MD |
RKVLMDMRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
2005-12-12 |
|
301-321
| 6 |
Washington Zone 11 |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2018-06-16 |
|
301-321
| 7 |
Washington Zone 11 |
MD |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2016-01-07 |
|
301-321
| 8 |
Washington Zone 11 |
MD |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2016-01-07 |
|
301-321
| 9 |
Washington Zone 11 |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2018-10-24 |
|
301-322
| A |
Washington Zone 4 |
MD |
LDVRMDLODS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-323
| A |
Laurel |
MD |
LARLMDCC5MD |
7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD |
236 |
|
|
|
301-323
| 0 |
Laurel |
MD |
LARLMDCC5MD |
7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD |
236 |
|
|
|
301-323
| 1 |
Laurel |
MD |
LARLMDCC5MD |
7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD |
236 |
|
|
|
301-323
| 2 |
Laurel |
MD |
LARLMDCC5MD |
7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD |
236 |
|
|
|
301-323
| 3 |
Laurel |
MD |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2010-03-07 |
|
301-323
| 4 |
Laurel |
MD |
LARLMDCC5MD |
7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD |
236 |
|
|
|
301-323
| 5 |
Laurel |
MD |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2010-03-07 |
|
301-323
| 6 |
Laurel |
MD |
LARLMDCC5MD |
7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD |
236 |
|
|
|
301-323
| 7 |
Laurel |
MD |
LARLMDCC5MD |
7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD |
236 |
|
|
|
301-323
| 8 |
Laurel |
MD |
WASHDCDP8MD |
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2010-02-22 |
|
301-323
| 9 |
Laurel |
MD |
LARLMDCC5MD |
7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD |
236 |
|
|
|
301-324
| A |
Washington Zone 5 |
MD |
CPHGMDCADS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-325
| A |
Washington Zone 3 |
MD |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
|
|
301-326
| A |
Washington Zone 3 |
MD |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
|
|
301-326
| 0 |
Washington Zone 3 |
MD |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2011-08-19 |
|
301-326
| 1 |
Washington Zone 3 |
MD |
ARTNVAARXDY |
318J COMCAST IP PHONE, LLC |
236 |
|
2006-10-09 |
|
301-326
| 2 |
Washington Zone 3 |
MD |
ARTNVAARXDY |
318J COMCAST IP PHONE, LLC |
236 |
|
2006-10-09 |
|
301-326
| 3 |
Washington Zone 3 |
MD |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2004-02-29 |
|
301-326
| 4 |
Washington Zone 3 |
MD |
ARTNVAARXDY |
318J COMCAST IP PHONE, LLC |
236 |
|
2006-10-09 |
|
301-326
| 5 |
Washington Zone 3 |
MD |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2004-11-06 |
|
301-326
| 6 |
Washington Zone 3 |
MD |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2004-05-16 |
|
301-326
| 7 |
Washington Zone 3 |
MD |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2004-05-27 |
|
301-326
| 8 |
Washington Zone 3 |
MD |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2004-09-03 |
|
301-326
| 9 |
Washington Zone 3 |
MD |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2007-01-11 |
|
301-327
| A |
Washington Zone 15 (Baltimore LATA) |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
|
|
301-327
| 0 |
Washington Zone 15 (Baltimore LATA) |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2014-09-01 |
|
301-327
| 1 |
Washington Zone 15 (Baltimore LATA) |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2010-01-02 |
|
301-327
| 2 |
Washington Zone 15 (Baltimore LATA) |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2015-07-26 |
|
301-327
| 3 |
Washington Zone 15 (Baltimore LATA) |
MD |
BLTOMDKHDS0 |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
238 |
|
2007-12-01 |
|
301-327
| 4 |
Washington Zone 15 (Baltimore LATA) |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2010-10-17 |
|
301-327
| 5 |
Washington Zone 15 (Baltimore LATA) |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2008-02-29 |
|
301-327
| 6 |
Washington Zone 15 (Baltimore LATA) |
MD |
BLTMMDSNDS6 |
281E YMAX COMMUNICATIONS CORP. - MD |
238 |
|
2008-09-30 |
|
301-327
| 7 |
Washington Zone 15 (Baltimore LATA) |
MD |
BLTMMDSNDS6 |
281E YMAX COMMUNICATIONS CORP. - MD |
238 |
|
2007-08-20 |
|
301-327
| 8 |
Washington Zone 15 (Baltimore LATA) |
MD |
BLTMMDSNDS6 |
281E YMAX COMMUNICATIONS CORP. - MD |
238 |
|
2008-09-16 |
|
301-327
| 9 |
Washington Zone 15 (Baltimore LATA) |
MD |
BLTMMDSNDS6 |
281E YMAX COMMUNICATIONS CORP. - MD |
238 |
|
2008-03-15 |
|
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Last updated: Tue, 16 Apr 2024 01:38:01 UTC
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