Local Calling Guide
Area code/prefix search
Washington Zone 10, MD
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| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 301-545
| 0 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-545
| 1 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-545
| 2 |
|
318J COMCAST IP PHONE, LLC |
236 |
|
2017-08-17 |
|
| 301-545
| 3 |
|
964H BARR TELL USA, INC. |
236 |
|
2018-05-08 |
|
| 301-545
| 4 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-545
| 5 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-545
| 6 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-545
| 7 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-545
| 8 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-545
| 9 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-548
| A |
GTBGMDGBPS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-550
| A |
BTVLMD18G00 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
|
|
| 301-550
| 0 |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2022-09-10 |
|
| 301-550
| 1 |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2022-09-10 |
|
| 301-550
| 2 |
|
876D ONVOY, LLC - MD |
236 |
|
2022-10-15 |
|
| 301-550
| 3 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2022-10-17 |
|
| 301-550
| 4 |
|
5562 METROPCS, INC. |
236 |
|
2022-11-14 |
|
| 301-550
| 5 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2022-09-09 |
|
| 301-550
| 6 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2022-09-09 |
|
| 301-550
| 7 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2022-09-09 |
|
| 301-550
| 8 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2022-09-09 |
|
| 301-550
| 9 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2022-09-09 |
|
| 301-590
| A |
GTBGMDGBPS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-590
| 0 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-590
| 1 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-590
| 2 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-590
| 3 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-590
| 4 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-590
| 5 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2014-09-16 |
|
| 301-590
| 6 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-590
| 7 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-590
| 8 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-590
| 9 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-601
| A |
GMTWMDGNDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-605
| A |
PLVLMDPVRS2 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-605
| 0 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2014-09-25 |
|
| 301-605
| 1 |
|
829J PAETEC ITEL, LLC |
236 |
|
2009-11-10 |
|
| 301-605
| 2 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2008-06-16 |
|
| 301-605
| 3 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2008-06-16 |
|
| 301-605
| 4 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2007-02-16 |
|
| 301-605
| 5 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2007-03-25 |
|
| 301-605
| 6 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-605
| 7 |
|
318J COMCAST IP PHONE, LLC |
236 |
|
2007-05-02 |
|
| 301-605
| 8 |
|
4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD |
236 |
|
2004-04-06 |
|
| 301-605
| 9 |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2012-01-14 |
|
| 301-610
| A |
RKVLMDRVDS1 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-610
| 0 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-610
| 1 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-610
| 2 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-610
| 3 |
|
876D ONVOY, LLC - MD |
236 |
|
2020-04-30 |
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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