Local Calling Guide
Area code/prefix search
Washington Zone 2, MD
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| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 301-767
| 8 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-767
| 9 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-771
| A |
CHCHMDBEDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-771
| 0 |
|
876D ONVOY, LLC - MD |
236 |
|
2014-09-01 |
|
| 301-771
| 1 |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2015-05-19 |
|
| 301-771
| 2 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-771
| 3 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-771
| 4 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-771
| 5 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-771
| 6 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-771
| 7 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-771
| 8 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-771
| 9 |
|
515J IP HORIZON LLC |
236 |
|
2016-05-31 |
|
| 301-803
| A |
BTHSMDWWDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-803
| 0 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2006-07-27 |
|
| 301-803
| 1 |
|
7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC |
236 |
|
|
|
| 301-803
| 2 |
|
7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC |
236 |
|
|
|
| 301-803
| 3 |
|
7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC |
236 |
|
|
|
| 301-803
| 4 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-803
| 5 |
|
2596 QUANTUM TELECOMMUNICATIONS, INC. - MD |
236 |
|
2003-12-25 |
|
| 301-803
| 6 |
|
7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC |
236 |
|
|
|
| 301-803
| 7 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-803
| 8 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2006-05-06 |
|
| 301-803
| 9 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2006-07-27 |
|
| 301-813
| A |
VINNVACB2MD |
8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) |
236 |
|
|
|
| 301-814
| A |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
|
|
| 301-827
| A |
BTHSMDRPDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-828
| A |
WASHDCDTDS1 |
7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC |
236 |
|
|
|
| 301-828
| 0 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2005-09-29 |
|
| 301-828
| 1 |
|
829J PAETEC ITEL, LLC |
236 |
|
2005-11-11 |
|
| 301-828
| 2 |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
|
|
| 301-828
| 3 |
|
7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC |
236 |
|
|
|
| 301-828
| 4 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
2005-04-22 |
|
| 301-828
| 5 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2006-07-27 |
|
| 301-828
| 6 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2007-06-28 |
|
| 301-828
| 7 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2006-04-07 |
|
| 301-828
| 8 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2008-03-11 |
|
| 301-828
| 9 |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
|
|
| 301-841
| A |
WASHDCINDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
|
|
| 301-841
| 0 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
|
|
| 301-841
| 1 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
|
|
| 301-841
| 2 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
|
|
| 301-841
| 3 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2007-10-23 |
|
| 301-841
| 4 |
|
829J PAETEC ITEL, LLC |
236 |
|
2007-05-17 |
|
| 301-841
| 5 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2006-09-09 |
|
| 301-841
| 6 |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2007-07-03 |
|
| 301-841
| 7 |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2005-08-07 |
|
| 301-841
| 8 |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2007-07-27 |
|
| 301-841
| 9 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
|
|
| 301-896
| A |
BTHSMDWWDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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