Phone numbers in Cedar Falls, Iowa
Cedar Falls has 13 phone prefixes in area code 319.
Biggest holders: CenturyLink / Lumen, Onvoy, AT&T (local phone). This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 62%
- Internet / business phone carrier 31%
- Phone company 8%
Every prefix in Cedar Falls
Search the first six digits of a number in this list. If it's here, the number started in Cedar Falls with the carrier shown. If it isn't, check the Iowa page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 319-222 | CenturyLink / Lumen | Local phone company | – |
| 319-242 | AT&T (local phone) | Local phone company | 2002 |
| 319-243 | CenturyLink / Lumen | Local phone company | 2002 |
| 319-260 | Imon Communications | Phone company | 2015 |
| 319-266 | CenturyLink / Lumen | Local phone company | – |
| 319-268 | CenturyLink / Lumen | Local phone company | – |
| 319-273 | CenturyLink / Lumen | Local phone company | – |
| 319-277 | CenturyLink / Lumen | Local phone company | – |
| 319-490 | Onvoy | Internet / business phone carrier | 2024 |
| 319-553 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 319-575 | Onvoy | Internet / business phone carrier | – |
| 319-666 | Fractel | Internet / business phone carrier | 2019 |
| 319-859 | CenturyLink / Lumen | 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.