Local Calling Guide
Area code/prefix search
Washington Zone 16, MD
<< 1 2 3 4 5 >>
| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 240-318
| A |
CLTNMDCLDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 240-318
| 0 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 240-318
| 1 |
|
568G PEERLESS NETWORK OF MARYLAND, LLC |
236 |
|
2013-05-04 |
|
| 240-318
| 2 |
|
318J COMCAST IP PHONE, LLC |
236 |
|
2008-02-22 |
|
| 240-318
| 3 |
|
318J COMCAST IP PHONE, LLC |
236 |
|
2009-11-27 |
|
| 240-318
| 4 |
|
5562 METROPCS, INC. |
236 |
|
2013-06-16 |
|
| 240-318
| 5 |
|
318J COMCAST IP PHONE, LLC |
236 |
|
2013-09-08 |
|
| 240-318
| 6 |
|
5562 METROPCS, INC. |
236 |
|
2015-02-05 |
|
| 240-318
| 7 |
|
876D ONVOY, LLC - MD |
236 |
|
2016-03-11 |
|
| 240-318
| 8 |
|
4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD |
236 |
|
2004-04-06 |
|
| 240-318
| 9 |
|
568G PEERLESS NETWORK OF MARYLAND, LLC |
236 |
|
2013-05-04 |
|
| 240-348
| A |
MCLNVA23DS4 |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
|
|
| 240-348
| 0 |
|
515J IP HORIZON LLC |
236 |
|
2015-03-21 |
|
| 240-348
| 1 |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
|
|
| 240-348
| 2 |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2010-08-19 |
|
| 240-348
| 3 |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2010-08-19 |
|
| 240-348
| 4 |
|
318J COMCAST IP PHONE, LLC |
236 |
|
2010-09-10 |
|
| 240-348
| 5 |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2012-01-14 |
|
| 240-348
| 6 |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2011-10-09 |
|
| 240-348
| 7 |
|
318J COMCAST IP PHONE, LLC |
236 |
|
2013-07-19 |
|
| 240-348
| 8 |
|
876D ONVOY, LLC - MD |
236 |
|
2016-03-11 |
|
| 240-348
| 9 |
|
876D ONVOY, LLC - MD |
236 |
|
2016-04-28 |
|
| 240-407
| A |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
|
|
| 240-407
| 0 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2025-08-21 |
|
| 240-407
| 1 |
|
876D ONVOY, LLC - MD |
236 |
|
2016-04-28 |
|
| 240-407
| 2 |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
|
|
| 240-407
| 3 |
|
876D ONVOY, LLC - MD |
236 |
|
2021-04-02 |
|
| 240-407
| 4 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2025-08-21 |
|
| 240-407
| 5 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2018-10-23 |
|
| 240-407
| 6 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2018-10-23 |
|
| 240-407
| 7 |
|
876D ONVOY, LLC - MD |
236 |
|
2011-04-23 |
|
| 240-407
| 8 |
|
876D ONVOY, LLC - MD |
236 |
|
2021-04-02 |
|
| 240-546
| A |
|
829J PAETEC ITEL, LLC |
236 |
|
2025-04-02 |
|
| 240-546
| 0 |
|
829J PAETEC ITEL, LLC |
236 |
|
|
|
| 240-546
| 1 |
|
829J PAETEC ITEL, LLC |
236 |
|
|
|
| 240-546
| 2 |
|
829J PAETEC ITEL, LLC |
236 |
|
|
|
| 240-546
| 3 |
|
829J PAETEC ITEL, LLC |
236 |
|
|
|
| 240-546
| 4 |
|
829J PAETEC ITEL, LLC |
236 |
|
|
|
| 240-546
| 5 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2018-06-16 |
|
| 240-546
| 6 |
|
876D ONVOY, LLC - MD |
236 |
|
2015-06-27 |
|
| 240-546
| 7 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2018-06-16 |
|
| 240-546
| 8 |
|
515J IP HORIZON LLC |
236 |
|
2016-05-31 |
|
| 240-546
| 9 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2019-05-01 |
|
| 240-846
| A |
WASKDCFNPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
|
|
| 240-846
| 0 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
|
|
| 240-846
| 1 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
|
|
| 240-846
| 2 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2019-05-01 |
|
| 240-846
| 3 |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2012-10-12 |
|
| 240-846
| 4 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2018-06-16 |
|
| 240-846
| 5 |
|
318J COMCAST IP PHONE, LLC |
236 |
|
2018-10-05 |
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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