Active Prefixes in Area Code 934

- 934-888
- Bay Shore
- 934-516
- Ua, New York
- 934-400
- Port Jefferson Station
- 934-222
- Water Mill
- 934-500
- Brentwood
- 934-444
- Amityville
- 934-451
- Bellport
- 934-852
- Yaphank
- 934-800
- Yaphank
- 934-999
- Ua, New York
- 934-666
- Central Islip
- 934-777
- Brentwood
- 934-223
- Smithtown
- 934-333
- Lindenhurst
- 934-420
- Farmingdale
- 934-470
- Northport