Phone numbers in Deerfield, Illinois
Deerfield has 39 phone prefixes in area codes 224, 847.
Biggest holders: AT&T (local phone), AT&T Mobility, Teleport Communications America. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 31%
- Local phone company 38%
- Internet / business phone carrier 28%
- Phone company 3%
Every prefix in Deerfield
Search the first six digits of a number in this list. If it's here, the number started in Deerfield with the carrier shown. If it isn't, check the Illinois page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 224-284 | T-Mobile (including Sprint) | Mobile carrier | 2018 |
| 224-285 | AT&T Mobility | Mobile carrier | 2019 |
| 224-300 | AT&T Mobility | Mobile carrier | – |
| 224-373 | Verizon Wireless | Mobile carrier | 2021 |
| 224-453 | AT&T Mobility | Mobile carrier | 2022 |
| 224-461 | Verizon Wireless | Mobile carrier | 2022 |
| 224-482 | Verizon Wireless | Mobile carrier | 2022 |
| 224-507 | AT&T Mobility | Mobile carrier | 2014 |
| 224-515 | AT&T Mobility | Mobile carrier | 2005 |
| 224-533 | First Communications | Phone company | 2006 |
| 224-551 | AT&T Mobility | Mobile carrier | 2016 |
| 224-554 | Teleport Communications America | Internet / business phone carrier | 2006 |
| 224-589 | Onvoy | Internet / business phone carrier | 2024 |
| 224-619 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 224-632 | AT&T (local phone) | Local phone company | 2002 |
| 224-727 | T-Mobile (including Sprint) | Mobile carrier | 2014 |
| 224-804 | Bandwidth | Internet / business phone carrier | 2013 |
| 224-813 | CenturyLink / Lumen | Local phone company | 2013 |
| 224-940 | MCImetro (Verizon Business) | Internet / business phone carrier | 2002 |
| 224-948 | MCImetro (Verizon Business) | Internet / business phone carrier | 2001 |
| 847-236 | AT&T (local phone) | Local phone company | – |
| 847-267 | AT&T (local phone) | Local phone company | – |
| 847-282 | AT&T (local phone) | Local phone company | – |
| 847-315 | AT&T (local phone) | Local phone company | 2002 |
| 847-317 | AT&T (local phone) | Local phone company | – |
| 847-374 | AT&T (local phone) | Local phone company | – |
| 847-405 | AT&T (local phone) | Local phone company | – |
| 847-444 | AT&T (local phone) | Local phone company | – |
| 847-527 | AT&T (local phone) | Local phone company | 2007 |
| 847-572 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 847-580 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 847-597 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 847-607 | Teleport Communications America | Internet / business phone carrier | – |
| 847-914 | AT&T (local phone) | Local phone company | – |
| 847-940 | AT&T (local phone) | Local phone company | – |
| 847-943 | Teleport Communications America | Internet / business phone carrier | – |
| 847-945 | AT&T (local phone) | Local phone company | – |
| 847-948 | AT&T (local phone) | Local phone company | – |
| 847-964 | Teleport Communications America | Internet / business phone carrier | 2001 |
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.