Local Calling Guide
Area code/prefix search
Washington Zone 11, MD
<< 1 2 3 4 5 6 >>
| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 301-321
| 8 |
|
876D ONVOY, LLC - MD |
236 |
|
2016-01-07 |
|
| 301-321
| 9 |
|
2593 CORE COMMUNICATIONS, INC. - MD |
236 |
|
2018-10-24 |
|
| 301-348
| A |
WASKDCFNPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
|
|
| 301-348
| 0 |
|
2593 CORE COMMUNICATIONS, INC. - MD |
236 |
|
2018-10-24 |
|
| 301-348
| 1 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
|
|
| 301-348
| 2 |
|
2593 CORE COMMUNICATIONS, INC. - MD |
236 |
|
2019-04-29 |
|
| 301-348
| 3 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
|
|
| 301-348
| 4 |
|
2593 CORE COMMUNICATIONS, INC. - MD |
236 |
|
2019-04-29 |
|
| 301-348
| 5 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2017-08-03 |
|
| 301-348
| 6 |
|
2593 CORE COMMUNICATIONS, INC. - MD |
236 |
|
2012-08-26 |
|
| 301-348
| 7 |
|
2593 CORE COMMUNICATIONS, INC. - MD |
236 |
|
2019-07-30 |
|
| 301-348
| 8 |
|
318J COMCAST IP PHONE LLC |
236 |
|
2016-02-24 |
|
| 301-348
| 9 |
|
2593 CORE COMMUNICATIONS, INC. - MD |
236 |
|
2018-10-24 |
|
| 301-382
| A |
RKVLMDMRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-413
| A |
RKVLMDMRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-443
| A |
RKVLMDMRRS1 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-460
| A |
SLSPMDNBDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-468
| A |
RKVLMDMRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-522
| A |
RKVLMDMRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-603
| A |
SLSPMDNBDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-603
| 0 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-603
| 1 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-603
| 2 |
|
318J COMCAST IP PHONE LLC |
236 |
|
2016-07-13 |
|
| 301-603
| 3 |
|
876D ONVOY, LLC - MD |
236 |
|
2015-06-27 |
|
| 301-603
| 4 |
|
2593 CORE COMMUNICATIONS, INC. - MD |
236 |
|
2018-10-24 |
|
| 301-603
| 5 |
|
964H BARR TELL USA, INC. |
236 |
|
2018-05-08 |
|
| 301-603
| 6 |
|
2593 CORE COMMUNICATIONS, INC. - MD |
236 |
|
2019-07-30 |
|
| 301-603
| 7 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-603
| 8 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-603
| 9 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-649
| A |
SLSPMDNWDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-692
| A |
WASHDCTTDS0 |
7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC |
236 |
|
|
|
| 301-692
| 0 |
|
7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC |
236 |
|
|
|
| 301-692
| 1 |
|
7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC |
236 |
|
|
|
| 301-692
| 2 |
|
7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC |
236 |
|
|
|
| 301-692
| 3 |
|
7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC |
236 |
|
|
|
| 301-692
| 4 |
|
7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC |
236 |
|
|
|
| 301-692
| 5 |
|
2593 CORE COMMUNICATIONS, INC. - MD |
236 |
|
2018-10-24 |
|
| 301-692
| 6 |
|
2593 CORE COMMUNICATIONS, INC. - MD |
236 |
|
2018-10-24 |
|
| 301-692
| 7 |
|
508J CENTURYLINK COMMUNICATIONS LLC |
236 |
|
2013-10-01 |
|
| 301-692
| 8 |
|
2593 CORE COMMUNICATIONS, INC. - MD |
236 |
|
2018-10-24 |
|
| 301-692
| 9 |
|
2593 CORE COMMUNICATIONS, INC. - MD |
236 |
|
2018-10-24 |
|
| 301-761
| A |
MCLNVA23DS4 |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
|
|
| 301-761
| 0 |
|
2593 CORE COMMUNICATIONS, INC. - MD |
236 |
|
2004-03-26 |
|
| 301-761
| 1 |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2004-12-29 |
|
| 301-761
| 2 |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2014-04-19 |
|
| 301-761
| 3 |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2004-12-29 |
|
| 301-761
| 4 |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
|
|
| 301-761
| 5 |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2014-02-21 |
|
| 301-761
| 6 |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2014-11-22 |
|
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