Local Calling Guide
Area code/prefix search
Vienna, MD
| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 410-376
| A |
VINNMDVNRS0 |
9212 VERIZON MARYLAND, INC. |
242 |
|
|
|
| 410-376
| 0 |
VINNMDVNRS0 |
9212 VERIZON MARYLAND, INC. |
242 |
|
|
|
| 410-376
| 1 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
242 |
|
2004-04-03 |
|
| 410-376
| 2 |
VINNMDVNRS0 |
9212 VERIZON MARYLAND, INC. |
242 |
|
|
|
| 410-376
| 3 |
VINNMDVNRS0 |
9212 VERIZON MARYLAND, INC. |
242 |
|
|
|
| 410-376
| 4 |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2019-03-04 |
|
| 410-376
| 5 |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2018-09-13 |
|
| 410-376
| 6 |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2019-03-04 |
|
| 410-376
| 7 |
SLBRMDSBXFX |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
242 |
|
2006-11-07 |
|
| 410-376
| 8 |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2017-04-14 |
|
| 410-376
| 9 |
SLBRMD906MD |
145J TERRA NOVA TELECOM INC. |
242 |
|
2024-02-14 |
|
| 443-233
| A |
|
829J PAETEC ITEL, LLC |
242 |
|
2025-04-01 |
|
| 443-233
| 0 |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2020-08-09 |
|
| 443-233
| 1 |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2020-08-09 |
|
| 443-233
| 2 |
SLBRMDSBXLX |
318J COMCAST IP PHONE, LLC |
242 |
|
2007-08-08 |
|
| 443-233
| 3 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
242 |
|
2018-06-17 |
|
| 443-233
| 4 |
|
145J TERRA NOVA TELECOM INC. |
242 |
|
2022-04-23 |
|
| 443-233
| 5 |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2020-10-17 |
|
| 443-233
| 6 |
SLBRMDSBXFX |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
242 |
|
2012-05-26 |
|
| 443-233
| 7 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
242 |
|
2018-06-17 |
|
| 443-233
| 8 |
SLBRMD902MD |
073H TELNYX LLC |
242 |
|
2017-09-13 |
|
| 443-233
| 9 |
|
829J PAETEC ITEL, LLC |
242 |
|
|
|
| 667-265
| A |
ESTNMDESRMD |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
242 |
|
|
|
| 667-265
| 0 |
SLBRMDSBX0X |
624H ONVOY SPECTRUM, LLC |
242 |
|
2021-11-15 |
|
| 667-265
| 1 |
SLBRMDSBX0X |
624H ONVOY SPECTRUM, LLC |
242 |
|
2021-05-27 |
|
| 667-265
| 2 |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2020-10-17 |
|
| 667-265
| 3 |
ESTNMDESRMD |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
242 |
|
2019-06-18 |
|
| 667-265
| 4 |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2020-04-30 |
|
| 667-265
| 5 |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2020-04-30 |
|
| 667-265
| 6 |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2021-03-05 |
|
| 667-265
| 7 |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2023-06-17 |
|
| 667-265
| 8 |
SLBRMDSBWMD |
073H TELNYX LLC |
242 |
|
2021-05-30 |
|
| 667-265
| 9 |
SLBRMDSBX0X |
624H ONVOY SPECTRUM, LLC |
242 |
|
2021-11-15 |
|
| 667-693
| A |
SLBRMD90BMD |
516J TON80 COMMUNICATIONS, LLC |
242 |
|
|
|
| 667-693
| 7 |
SLBRMD90BMD |
516J TON80 COMMUNICATIONS, LLC |
242 |
|
2022-05-26 |
|
Last updated: Thu, 16 Oct 2025 03:04:18 UTC
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