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 |
301-970
| 6 |
Washington Zone 14 (Baltimore LATA) |
MD |
BLTMMDCHXUX |
624H ONVOY SPECTRUM, LLC |
238 |
|
2021-11-08 |
|
301-970
| 8 |
Washington Zone 14 (Baltimore LATA) |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2018-10-24 |
|
301-970
| 9 |
Washington Zone 14 (Baltimore LATA) |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2011-11-13 |
|
301-971
| A |
Washington Zone 6 |
MD |
LNHMMDADGT0 |
8832 STARPOWER COMMUNICATIONS, LLC - MD |
236 |
|
|
|
301-971
| 0 |
Washington Zone 6 |
MD |
WASHDC12DS6 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
236 |
|
2012-09-15 |
|
301-971
| 1 |
Washington Zone 6 |
MD |
LARLMDCCDS0 |
4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD |
236 |
|
2004-04-06 |
|
301-971
| 2 |
Washington Zone 6 |
MD |
WASHDCDP8MD |
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2012-10-19 |
|
301-971
| 3 |
Washington Zone 6 |
MD |
HRNDVACKBMD |
9170 BROADVIEW NETWORKS, INC. - MD |
236 |
|
2011-06-12 |
|
301-971
| 4 |
Washington Zone 6 |
MD |
WASHDCDP8MD |
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2012-10-19 |
|
301-971
| 5 |
Washington Zone 6 |
MD |
OXHLMDOHDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
2013-02-25 |
|
301-971
| 6 |
Washington Zone 6 |
MD |
OXHLMDOHDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
2013-02-25 |
|
301-971
| 7 |
Washington Zone 6 |
MD |
BTVLMD12CM9 |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2015-01-31 |
|
301-971
| 8 |
Washington Zone 6 |
MD |
LNHMMDADGT0 |
8832 STARPOWER COMMUNICATIONS, LLC - MD |
236 |
|
|
|
301-971
| 9 |
Washington Zone 6 |
MD |
|
515J IP HORIZON LLC |
236 |
|
2013-09-06 |
|
301-972
| A |
Gaithersburg |
MD |
GMTWMDGNDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-973
| A |
Washington Zone 14 (Baltimore LATA) |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
|
|
301-973
| 0 |
Washington Zone 14 (Baltimore LATA) |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2018-10-24 |
|
301-973
| 1 |
Washington Zone 14 (Baltimore LATA) |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2018-10-24 |
|
301-973
| 2 |
Washington Zone 14 (Baltimore LATA) |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2018-10-24 |
|
301-973
| 3 |
Washington Zone 14 (Baltimore LATA) |
MD |
BLTQMD01DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
238 |
|
2018-11-20 |
|
301-973
| 4 |
Washington Zone 14 (Baltimore LATA) |
MD |
BLTMMDCHXVX |
321J HD CARRIER LLC |
238 |
|
2020-05-02 |
|
301-973
| 5 |
Washington Zone 14 (Baltimore LATA) |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2020-10-17 |
|
301-973
| 6 |
Washington Zone 14 (Baltimore LATA) |
MD |
BLTQMD01DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
238 |
|
2020-04-19 |
|
301-973
| 7 |
Washington Zone 14 (Baltimore LATA) |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2019-04-30 |
|
301-973
| 8 |
Washington Zone 14 (Baltimore LATA) |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2018-10-24 |
|
301-973
| 9 |
Washington Zone 14 (Baltimore LATA) |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2018-10-24 |
|
301-974
| A |
Laurel |
MD |
LNHMMDADGT0 |
8832 STARPOWER COMMUNICATIONS, LLC - MD |
236 |
|
|
|
301-974
| 0 |
Laurel |
MD |
LNHMMDADGT0 |
8832 STARPOWER COMMUNICATIONS, LLC - MD |
236 |
|
|
|
301-974
| 1 |
Laurel |
MD |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2006-08-07 |
|
301-974
| 2 |
Laurel |
MD |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2006-08-07 |
|
301-974
| 3 |
Laurel |
MD |
WASHDCMTX7X |
2697 CTC COMMUNICATIONS CORP. - MD |
236 |
|
2006-05-04 |
|
301-974
| 4 |
Laurel |
MD |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2006-08-07 |
|
301-974
| 5 |
Laurel |
MD |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2008-02-15 |
|
301-974
| 6 |
Laurel |
MD |
HRNDVACKAMD |
1958 ATX TELECOMMUNICATIONS SERVICES, LTD. |
236 |
|
2006-04-26 |
|
301-974
| 7 |
Laurel |
MD |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2008-02-15 |
|
301-974
| 8 |
Laurel |
MD |
LNHMMDADGT0 |
8832 STARPOWER COMMUNICATIONS, LLC - MD |
236 |
|
|
|
301-974
| 9 |
Laurel |
MD |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2008-02-15 |
|
301-975
| A |
Washington Zone 10 |
MD |
GTBGMDGBPS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-975
| 0 |
Washington Zone 10 |
MD |
GTBGMDGBPS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-975
| 1 |
Washington Zone 10 |
MD |
GTBGMDGBPS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-975
| 2 |
Washington Zone 10 |
MD |
GTBGMDGBPS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-975
| 3 |
Washington Zone 10 |
MD |
GTBGMDGBPS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-975
| 4 |
Washington Zone 10 |
MD |
GTBGMDGBPS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-975
| 5 |
Washington Zone 10 |
MD |
GTBGMDGBPS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-975
| 6 |
Washington Zone 10 |
MD |
GTBGMDGBPS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-975
| 7 |
Washington Zone 10 |
MD |
BTVLMD127MD |
5562 METROPCS, INC. |
236 |
|
2013-06-16 |
|
301-975
| 8 |
Washington Zone 10 |
MD |
GTBGMDGBPS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-975
| 9 |
Washington Zone 10 |
MD |
GTBGMDGBPS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-977
| A |
Gaithersburg |
MD |
GTBGMDGBPS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-978
| A |
Washington Zone 10 |
MD |
GTBGMDGBPS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
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Last updated: Tue, 16 Apr 2024 01:38:01 UTC
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