Phone numbers in Macomb, Illinois
Macomb has 23 phone prefixes in area code 309.
Biggest holders: Frontier, Nuso, Verizon Wireless. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 26%
- Local phone company 22%
- Internet / business phone carrier 43%
- Phone company 9%
Every prefix in Macomb
Search the first six digits of a number in this list. If it's here, the number started in Macomb with the carrier shown. If it isn't, check the Illinois page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 309-209 | Nuso | Internet / business phone carrier | 2013 |
| 309-252 | Verizon Wireless | Mobile carrier | – |
| 309-255 | Verizon Wireless | Mobile carrier | – |
| 309-259 | Onvoy | Internet / business phone carrier | – |
| 309-295 | Frontier | Local phone company | – |
| 309-298 | Frontier | Local phone company | – |
| 309-313 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 309-318 | MetroPCS (T-Mobile) | Mobile carrier | 2003 |
| 309-331 | UScellular | Mobile carrier | – |
| 309-333 | UScellular | Mobile carrier | – |
| 309-421 | Comcast | Internet / business phone carrier | 2008 |
| 309-544 | Skyetel | Internet / business phone carrier | – |
| 309-575 | Mtc Communications | Phone company | 2010 |
| 309-588 | Level 3 (Lumen) | Internet / business phone carrier | 2004 |
| 309-730 | Nuso | Internet / business phone carrier | 2024 |
| 309-731 | Level 3 (Lumen) | Internet / business phone carrier | 2005 |
| 309-833 | Frontier | Local phone company | – |
| 309-836 | Frontier | Local phone company | – |
| 309-837 | Frontier | Local phone company | – |
| 309-864 | Teleport Communications America | Internet / business phone carrier | 2009 |
| 309-954 | T-Mobile (including Sprint) | Mobile carrier | 2016 |
| 309-978 | Wavenation | Phone company | 2025 |
| 309-980 | Bandwidth | Internet / business phone carrier | 2025 |
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.