Phone numbers in Barrington, Illinois
Barrington has 34 phone prefixes in area codes 224, 847.
Biggest holders: T-Mobile (including Sprint), AT&T (local phone), Onvoy. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 35%
- Local phone company 26%
- Internet / business phone carrier 38%
Every prefix in Barrington
Search the first six digits of a number in this list. If it's here, the number started in Barrington with the carrier shown. If it isn't, check the Illinois page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 224-228 | Onvoy | Internet / business phone carrier | 2012 |
| 224-288 | AT&T Mobility | Mobile carrier | 2018 |
| 224-385 | T-Mobile (including Sprint) | Mobile carrier | 2014 |
| 224-396 | T-Mobile (including Sprint) | Mobile carrier | 2021 |
| 224-427 | T-Mobile (including Sprint) | Mobile carrier | 2013 |
| 224-448 | AT&T Mobility | Mobile carrier | 2021 |
| 224-451 | Onvoy | Internet / business phone carrier | 2020 |
| 224-485 | Nuso | Internet / business phone carrier | 2022 |
| 224-489 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 224-512 | AT&T (local phone) | Local phone company | 2002 |
| 224-517 | T-Mobile (including Sprint) | Mobile carrier | 2015 |
| 224-594 | Onvoy | Internet / business phone carrier | 2024 |
| 224-599 | Fractel | Internet / business phone carrier | 2020 |
| 224-622 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 224-633 | Level 3 (Lumen) | Internet / business phone carrier | 2005 |
| 224-634 | AT&T Mobility | Mobile carrier | 2009 |
| 224-655 | Level 3 (Lumen) | Internet / business phone carrier | 2005 |
| 224-770 | T-Mobile (including Sprint) | Mobile carrier | 2005 |
| 224-848 | T-Mobile (including Sprint) | Mobile carrier | 2005 |
| 847-248 | AT&T (local phone) | Local phone company | – |
| 847-277 | AT&T (local phone) | Local phone company | – |
| 847-304 | AT&T (local phone) | Local phone company | – |
| 847-381 | AT&T (local phone) | Local phone company | – |
| 847-382 | AT&T (local phone) | Local phone company | – |
| 847-387 | Teleport Communications America | Internet / business phone carrier | – |
| 847-620 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 847-713 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 847-756 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 847-765 | AT&T (local phone) | Local phone company | – |
| 847-809 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 847-820 | Voip Innovations | Internet / business phone carrier | 2026 |
| 847-842 | AT&T (local phone) | Local phone company | – |
| 847-852 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 847-898 | AT&T (local phone) | 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.