Phone numbers in Brook, Indiana
Brook has 3 phone prefixes in area code 219.
Biggest holders: Level 3 (Lumen), Fbn Indiana, Brightspeed Of Indiana. This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 33%
- Internet / business phone carrier 33%
- Phone company 33%
Every prefix in Brook
Search the first six digits of a number in this list. If it's here, the number started in Brook with the carrier shown. If it isn't, check the Indiana page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 219-224 | Level 3 (Lumen) | Internet / business phone carrier | 2004 |
| 219-235 | Fbn Indiana | Phone company | 2004 |
| 219-275 | Brightspeed Of Indiana | Local phone company | – |
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.