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 |
| 301-398
| A |
RKVLMDRVDS1 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-398
| 0 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
2003-11-09 |
|
| 301-398
| 1 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
2003-11-09 |
|
| 301-398
| 2 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
2003-11-09 |
|
| 301-398
| 3 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
2003-11-09 |
|
| 301-398
| 4 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
2003-11-09 |
|
| 301-398
| 5 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
2003-11-09 |
|
| 301-398
| 6 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
2003-11-09 |
|
| 301-398
| 7 |
|
876D ONVOY, LLC - MD |
236 |
|
2003-11-09 |
|
| 301-398
| 8 |
|
876D ONVOY, LLC - MD |
236 |
|
2003-11-09 |
|
| 301-398
| 9 |
|
876D ONVOY, LLC - MD |
236 |
|
2003-11-09 |
|
| 301-417
| A |
GTBGMDGBPS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-417
| 0 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-417
| 1 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-417
| 2 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-417
| 3 |
|
829J PAETEC ITEL, LLC |
236 |
|
2015-09-17 |
|
| 301-417
| 4 |
|
318J COMCAST IP PHONE, LLC |
236 |
|
2015-04-14 |
|
| 301-417
| 5 |
|
876D ONVOY, LLC - MD |
236 |
|
2015-06-27 |
|
| 301-417
| 6 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-417
| 7 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-417
| 8 |
|
318J COMCAST IP PHONE, LLC |
236 |
|
2015-10-15 |
|
| 301-417
| 9 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-424
| A |
RKVLMDRVDS1 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-428
| A |
GMTWMDGNDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-444
| A |
GMTWMDGNDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-444
| 0 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-444
| 1 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-444
| 2 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-444
| 3 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-444
| 4 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
2007-02-06 |
|
| 301-444
| 5 |
|
515J IP HORIZON LLC |
236 |
|
2007-09-13 |
|
| 301-444
| 6 |
|
568G PEERLESS NETWORK OF MARYLAND, LLC |
236 |
|
2020-03-18 |
|
| 301-444
| 7 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
2004-06-10 |
|
| 301-444
| 8 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-444
| 9 |
|
073H TELNYX LLC |
236 |
|
2020-01-28 |
|
| 301-461
| A |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
|
|
| 301-517
| A |
RKVLMDRVDS1 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-517
| 0 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-517
| 1 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-517
| 2 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-517
| 3 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-517
| 4 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-517
| 5 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-517
| 6 |
|
876D ONVOY, LLC - MD |
236 |
|
2018-01-13 |
|
| 301-517
| 7 |
|
073H TELNYX LLC |
236 |
|
2017-03-14 |
|
| 301-517
| 8 |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-517
| 9 |
|
876D ONVOY, LLC - MD |
236 |
|
2018-01-13 |
|
| 301-529
| A |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
|
|
| 301-544
| A |
RKVLMDRVDS1 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-545
| A |
RKVLMDRVDS1 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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