Local Calling Guide
Area code/prefix search
Highfield, MD
| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 240-202
| A |
CMLDMDCMEMD |
876D ONVOY, LLC - MD |
240 |
|
|
|
| 240-202
| 1 |
|
876D ONVOY, LLC - MD |
240 |
|
2020-07-25 |
|
| 240-202
| 2 |
|
876D ONVOY, LLC - MD |
240 |
|
2020-07-25 |
|
| 240-202
| 3 |
|
876D ONVOY, LLC - MD |
240 |
|
2020-10-17 |
|
| 240-202
| 4 |
|
876D ONVOY, LLC - MD |
240 |
|
2020-10-17 |
|
| 240-202
| 5 |
|
624H ONVOY SPECTRUM, LLC |
240 |
|
2021-05-24 |
|
| 240-202
| 6 |
|
876D ONVOY, LLC - MD |
240 |
|
2023-04-17 |
|
| 240-202
| 7 |
|
145J TERRA NOVA TELECOM INC. |
240 |
|
2024-02-15 |
|
| 240-202
| 8 |
|
624H ONVOY SPECTRUM, LLC |
240 |
|
2021-11-15 |
|
| 240-202
| 9 |
|
624H ONVOY SPECTRUM, LLC |
240 |
|
2021-11-15 |
|
| 240-251
| A |
HGTWMD53DS0 |
2593 CORE COMMUNICATIONS, INC.- MD |
240 |
|
|
|
| 240-617
| A |
HGTWMDHGDMD |
071F BANDWIDTH.COM CLEC, LLC - MD |
240 |
|
|
|
| 240-617
| 0 |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
240 |
|
2015-09-14 |
|
| 240-617
| 1 |
|
876D ONVOY, LLC - MD |
240 |
|
2016-09-12 |
|
| 240-617
| 2 |
|
876D ONVOY, LLC - MD |
240 |
|
2016-09-12 |
|
| 240-617
| 3 |
|
876D ONVOY, LLC - MD |
240 |
|
2020-01-06 |
|
| 240-617
| 4 |
|
876D ONVOY, LLC - MD |
240 |
|
2020-01-06 |
|
| 240-617
| 5 |
|
876D ONVOY, LLC - MD |
240 |
|
2021-03-04 |
|
| 240-617
| 6 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
240 |
|
2019-07-31 |
|
| 240-617
| 7 |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
240 |
|
2016-10-27 |
|
| 240-617
| 8 |
|
073H TELNYX LLC |
240 |
|
2017-08-08 |
|
| 240-617
| 9 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
240 |
|
2019-07-31 |
|
| 240-914
| A |
HGTWMD53FMD |
490J DISH WIRELESS, LLC |
240 |
|
|
|
| 240-914
| 8 |
|
876D ONVOY, LLC - MD |
240 |
|
2023-06-16 |
|
| 240-914
| 9 |
|
490J DISH WIRELESS, LLC |
240 |
|
2023-03-20 |
|
| 301-241
| A |
HGFLMDHFRS0 |
9212 VERIZON MARYLAND, INC. |
240 |
|
|
|
| 301-241
| 0 |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
240 |
|
2012-01-22 |
|
| 301-241
| 1 |
|
9212 VERIZON MARYLAND, INC. |
240 |
|
|
|
| 301-241
| 2 |
|
318J COMCAST IP PHONE, LLC |
240 |
|
2010-03-02 |
|
| 301-241
| 3 |
|
9212 VERIZON MARYLAND, INC. |
240 |
|
|
|
| 301-241
| 4 |
|
9212 VERIZON MARYLAND, INC. |
240 |
|
|
|
| 301-241
| 5 |
|
9212 VERIZON MARYLAND, INC. |
240 |
|
|
|
| 301-241
| 6 |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
240 |
|
2014-07-12 |
|
| 301-241
| 7 |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
240 |
|
2007-06-04 |
|
| 301-241
| 8 |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
240 |
|
2014-10-06 |
|
| 301-241
| 9 |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
240 |
|
2015-02-13 |
|
Last updated: Thu, 01 Jan 2026 03:59:49 UTC
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