Local Calling Guide
Area code/prefix search
Marion, MD
| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 410-623
| A |
MARNMDMARS1 |
9212 VERIZON MARYLAND, INC. |
242 |
|
|
|
| 410-623
| 0 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
242 |
|
2004-04-03 |
|
| 410-623
| 1 |
SLBRMD906MD |
145J TERRA NOVA TELECOM INC. |
242 |
|
2024-02-14 |
|
| 410-623
| 2 |
MARNMDMARS1 |
9212 VERIZON MARYLAND, INC. |
242 |
|
|
|
| 410-623
| 3 |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2019-03-04 |
|
| 410-623
| 4 |
|
145J TERRA NOVA TELECOM INC. |
242 |
|
2025-05-07 |
|
| 410-623
| 5 |
SLBRMD902MD |
073H TELNYX LLC |
242 |
|
2017-09-13 |
|
| 410-623
| 6 |
SLBRMD906MD |
145J TERRA NOVA TELECOM INC. |
242 |
|
2024-09-13 |
|
| 410-623
| 7 |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2017-04-14 |
|
| 410-623
| 8 |
MARNMDMARS1 |
9212 VERIZON MARYLAND, INC. |
242 |
|
|
|
| 410-623
| 9 |
SLBRMDSBX7Y |
792K CHARTER IP ENABLED SERVICES, LLC |
242 |
|
2020-09-25 |
|
| 667-660
| A |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
|
|
| 667-660
| 4 |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2020-10-17 |
|
| 667-660
| 5 |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2020-10-17 |
|
| 667-660
| 6 |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2019-12-11 |
|
| 667-660
| 7 |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2019-12-11 |
|
| 667-660
| 8 |
SLBRMDSBX0X |
624H ONVOY SPECTRUM, LLC |
242 |
|
2021-05-27 |
|
Last updated: Thu, 16 Oct 2025 03:04:18 UTC
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