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 |
| 301-769
| 5 |
Leonardtown |
MD |
WASKDCFNPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2005-08-15 |
|
| 301-769
| 6 |
Leonardtown |
MD |
WASKDCFNPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2005-08-15 |
|
| 301-769
| 7 |
Leonardtown |
MD |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2022-08-15 |
|
| 301-769
| 8 |
Leonardtown |
MD |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2004-01-11 |
|
| 301-769
| 9 |
Leonardtown |
MD |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2016-03-11 |
|
| 301-770
| A |
Washington Zone 11 |
MD |
RKVLMDMRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-771
| A |
Washington Zone 2 |
MD |
CHCHMDBEDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-771
| 0 |
Washington Zone 2 |
MD |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2014-09-01 |
|
| 301-771
| 1 |
Washington Zone 2 |
MD |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2015-05-19 |
|
| 301-771
| 2 |
Washington Zone 2 |
MD |
CHCHMDBEDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-771
| 3 |
Washington Zone 2 |
MD |
CHCHMDBEDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-771
| 4 |
Washington Zone 2 |
MD |
CHCHMDBEDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-771
| 5 |
Washington Zone 2 |
MD |
CHCHMDBEDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-771
| 6 |
Washington Zone 2 |
MD |
CHCHMDBEDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-771
| 7 |
Washington Zone 2 |
MD |
CHCHMDBEDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-771
| 8 |
Washington Zone 2 |
MD |
CHCHMDBEDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-771
| 9 |
Washington Zone 2 |
MD |
|
515J IP HORIZON LLC |
236 |
|
2016-05-31 |
|
| 301-772
| A |
Washington Zone 4 |
MD |
LDVRMDLODS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-773
| A |
Washington Zone 4 |
MD |
LDVRMDLODS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-774
| A |
Ashton |
MD |
OLNYMDOKRP0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-775
| A |
Washington Zone 3 |
MD |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
|
|
| 301-776
| A |
Laurel |
MD |
LARLMDLRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-777
| A |
Cumberland |
MD |
CMLDMDCMDS0 |
9212 VERIZON MARYLAND, INC. |
240 |
|
|
|
| 301-777
| 0 |
Cumberland |
MD |
CMLDMDCMDS0 |
9212 VERIZON MARYLAND, INC. |
240 |
|
|
|
| 301-777
| 1 |
Cumberland |
MD |
CMLDMDCMDS0 |
9212 VERIZON MARYLAND, INC. |
240 |
|
|
|
| 301-777
| 2 |
Cumberland |
MD |
CMLDMDCMDS0 |
9212 VERIZON MARYLAND, INC. |
240 |
|
|
|
| 301-777
| 3 |
Cumberland |
MD |
CMLDMDCMDS0 |
9212 VERIZON MARYLAND, INC. |
240 |
|
|
|
| 301-777
| 4 |
Cumberland |
MD |
CMLDMDCMDS0 |
9212 VERIZON MARYLAND, INC. |
240 |
|
|
|
| 301-777
| 5 |
Cumberland |
MD |
CMLDMDCMDS0 |
9212 VERIZON MARYLAND, INC. |
240 |
|
|
|
| 301-777
| 6 |
Cumberland |
MD |
CMLDMDCMDS0 |
9212 VERIZON MARYLAND, INC. |
240 |
|
2011-02-13 |
|
| 301-777
| 7 |
Cumberland |
MD |
CMLDMDCMDS0 |
9212 VERIZON MARYLAND, INC. |
240 |
|
|
|
| 301-777
| 8 |
Cumberland |
MD |
CMLDMDCMDS0 |
9212 VERIZON MARYLAND, INC. |
240 |
|
|
|
| 301-777
| 9 |
Cumberland |
MD |
CMLDMDCMDS0 |
9212 VERIZON MARYLAND, INC. |
240 |
|
|
|
| 301-778
| A |
Washington Zone 5 |
MD |
WASKDCFNPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
|
|
| 301-778
| 0 |
Washington Zone 5 |
MD |
WASHDCDP8MD |
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2012-10-12 |
|
| 301-778
| 1 |
Washington Zone 5 |
MD |
WASKDCFNPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
|
|
| 301-778
| 2 |
Washington Zone 5 |
MD |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2008-10-05 |
|
| 301-778
| 3 |
Washington Zone 5 |
MD |
WASLDCRGDS0 |
281E YMAX COMMUNICATIONS CORP. - MD |
236 |
|
2008-10-10 |
|
| 301-778
| 4 |
Washington Zone 5 |
MD |
WASHDCDP8MD |
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2010-10-28 |
|
| 301-778
| 5 |
Washington Zone 5 |
MD |
WASHDCDP8MD |
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2012-07-15 |
|
| 301-778
| 6 |
Washington Zone 5 |
MD |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2012-04-05 |
|
| 301-778
| 7 |
Washington Zone 5 |
MD |
WASHDCDP8MD |
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2007-10-22 |
|
| 301-778
| 8 |
Washington Zone 5 |
MD |
WASHDCDP8MD |
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2010-10-28 |
|
| 301-778
| 9 |
Washington Zone 5 |
MD |
WASHDCDP8MD |
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2012-10-12 |
|
| 301-779
| A |
Washington Zone 4 |
MD |
HYVLMDHYDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-780
| A |
Washington Zone 15 |
MD |
MRBOMDMBDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-780
| 0 |
Washington Zone 15 |
MD |
MRBOMDMBDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-780
| 1 |
Washington Zone 15 |
MD |
MRBOMDMBDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-780
| 2 |
Washington Zone 15 |
MD |
MRBOMDMBDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-780
| 3 |
Washington Zone 15 |
MD |
MRBOMDMBDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
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Last updated: Tue, 31 Mar 2026 13:56:49 UTC
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