Phone numbers in Oak Ridge, Louisiana
Oak Ridge has 4 phone prefixes in area code 318.
Biggest holders: AT&T Mobility, Brightspeed Of Louisiana, TON80 Communications. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 50%
- Local phone company 25%
- Internet / business phone carrier 25%
Every prefix in Oak Ridge
Search the first six digits of a number in this list. If it's here, the number started in Oak Ridge with the carrier shown. If it isn't, check the Louisiana page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 318-244 | Brightspeed Of Louisiana | Local phone company | – |
| 318-496 | AT&T Mobility | Mobile carrier | 2009 |
| 318-622 | AT&T Mobility | Mobile carrier | 2004 |
| 318-910 | TON80 Communications | Internet / business phone carrier | 2022 |
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number. Source: NANPA central office code records, 2026-10-10.