Local Calling Guide
Area code/prefix search
Gaithersburg, MD
<< 1 2 3 4 5 6 7 8 9 10 11 12 13 >>
| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 240-454
| 8 |
WASHDCCZDS1 |
4773 XO MARYLAND, LLC |
236 |
|
2006-08-12 |
|
| 240-454
| 9 |
WASHDCCZDS1 |
4773 XO MARYLAND, LLC |
236 |
|
2006-08-12 |
|
| 240-474
| A |
VINNVACB2MD |
8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) |
236 |
|
|
|
| 240-474
| 0 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2016-03-04 |
|
| 240-474
| 1 |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2015-07-20 |
|
| 240-474
| 2 |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2015-07-20 |
|
| 240-474
| 3 |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2015-07-20 |
|
| 240-474
| 4 |
VINNVACB2MD |
8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) |
236 |
|
2015-07-13 |
|
| 240-474
| 5 |
ARTNVAARXDY |
318J COMCAST IP PHONE, LLC |
236 |
|
2015-09-30 |
|
| 240-474
| 6 |
BTVLMD127MD |
5562 METROPCS, INC. |
236 |
|
2015-12-10 |
|
| 240-474
| 7 |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2015-10-16 |
|
| 240-474
| 8 |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2016-01-08 |
|
| 240-474
| 9 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2016-03-04 |
|
| 240-477
| A |
HRNDVACKBMD |
5966 LIGHTWAVE COMMUNICATIONS, LLC - MD |
236 |
|
|
|
| 240-477
| 0 |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2008-06-09 |
|
| 240-477
| 1 |
HRNDVACKBMD |
5966 LIGHTWAVE COMMUNICATIONS, LLC - MD |
236 |
|
2005-06-19 |
|
| 240-477
| 2 |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2006-04-07 |
|
| 240-477
| 3 |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2006-04-07 |
|
| 240-477
| 4 |
ARTNVAARXDY |
318J COMCAST IP PHONE, LLC |
236 |
|
2006-05-29 |
|
| 240-477
| 5 |
ARTNVAARXDY |
318J COMCAST IP PHONE, LLC |
236 |
|
2006-05-29 |
|
| 240-477
| 6 |
ARTNVAARXDY |
318J COMCAST IP PHONE, LLC |
236 |
|
2006-08-02 |
|
| 240-477
| 7 |
ARTNVAARXDY |
318J COMCAST IP PHONE, LLC |
236 |
|
2006-08-02 |
|
| 240-477
| 8 |
ARTNVAARXDY |
318J COMCAST IP PHONE, LLC |
236 |
|
2006-08-02 |
|
| 240-477
| 9 |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2008-06-09 |
|
| 240-562
| A |
WASHDCINDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
|
|
| 240-562
| 0 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2015-07-27 |
|
| 240-562
| 1 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2015-07-27 |
|
| 240-562
| 2 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2015-07-27 |
|
| 240-562
| 3 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2015-07-27 |
|
| 240-562
| 4 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2015-07-27 |
|
| 240-562
| 5 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2015-07-27 |
|
| 240-562
| 6 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2015-07-27 |
|
| 240-562
| 7 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2015-07-27 |
|
| 240-562
| 8 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2015-07-27 |
|
| 240-562
| 9 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2015-07-27 |
|
| 240-597
| A |
SLSPMD91DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
236 |
|
|
|
| 240-597
| 0 |
SLSPMD91DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
236 |
|
|
|
| 240-597
| 1 |
SLSPMD91DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
236 |
|
|
|
| 240-597
| 2 |
SLSPMD913MD |
939H COMMIO, LLC |
236 |
|
2021-07-12 |
|
| 240-597
| 3 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2019-06-27 |
|
| 240-597
| 4 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2019-06-27 |
|
| 240-597
| 5 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2019-06-27 |
|
| 240-597
| 6 |
BTVLMD18G00 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2019-07-13 |
|
| 240-597
| 7 |
SLSPMD91DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
236 |
|
2019-12-28 |
|
| 240-597
| 8 |
BTVLMD18G00 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2022-06-14 |
|
| 240-597
| 9 |
SLSPMD91DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
236 |
|
|
|
| 240-631
| A |
GTBGMDGBPS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 240-632
| A |
GTBGMDGBPS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 240-654
| A |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
|
|
| 240-654
| 0 |
MCLNVA23DS4 |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2008-05-15 |
|
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Last updated: Tue, 16 Apr 2024 01:38:01 UTC
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