Phone numbers in Northbrook, Illinois
Northbrook has 261 phone prefixes in area codes 224, 312, 630, 708, 815, 847.
Biggest holders: Verizon Wireless, T-Mobile (including Sprint), AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 72%
- Local phone company 7%
- Internet / business phone carrier 8%
- Paging service 11%
- Phone company 1%
Every prefix in Northbrook
Search the first six digits of a number in this list. If it's here, the number started in Northbrook with the carrier shown. If it isn't, check the Illinois page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 224-203 | Verizon Wireless | Mobile carrier | 2011 |
| 224-205 | Verizon Wireless | Mobile carrier | 2011 |
| 224-213 | Verizon Wireless | Mobile carrier | 2005 |
| 224-221 | AT&T Mobility | Mobile carrier | 2008 |
| 224-223 | AT&T Mobility | Mobile carrier | 2008 |
| 224-226 | T-Mobile (including Sprint) | Mobile carrier | 2011 |
| 224-234 | Verizon Wireless | Mobile carrier | 2005 |
| 224-235 | T-Mobile (including Sprint) | Mobile carrier | 2011 |
| 224-246 | Verizon Wireless | Mobile carrier | 2011 |
| 224-261 | T-Mobile (including Sprint) | Mobile carrier | 2011 |
| 224-277 | Verizon Wireless | Mobile carrier | 2010 |
| 224-282 | First Communications | Phone company | – |
| 224-287 | Verizon Wireless | Mobile carrier | 2016 |
| 224-305 | T-Mobile (including Sprint) | Mobile carrier | 2003 |
| 224-306 | Verizon Wireless | Mobile carrier | – |
| 224-309 | Onvoy | Internet / business phone carrier | 2023 |
| 224-316 | Verizon Wireless | Mobile carrier | 2012 |
| 224-326 | Comcast | Internet / business phone carrier | 2013 |
| 224-330 | MCImetro (Verizon Business) | Internet / business phone carrier | 2005 |
| 224-336 | T-Mobile (including Sprint) | Mobile carrier | 2013 |
| 224-343 | T-Mobile (including Sprint) | Mobile carrier | 2007 |
| 224-355 | T-Mobile (including Sprint) | Mobile carrier | 2005 |
| 224-365 | Onvoy | Internet / business phone carrier | – |
| 224-374 | Verizon Wireless | Mobile carrier | 2006 |
| 224-383 | First Communications | Phone company | 2004 |
| 224-392 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 224-405 | CenturyLink / Lumen | Local phone company | 2002 |
| 224-406 | Verizon Wireless | Mobile carrier | 2005 |
| 224-412 | Verizon Wireless | Mobile carrier | 2013 |
| 224-415 | T-Mobile (including Sprint) | Mobile carrier | 2013 |
| 224-456 | Verizon Wireless | Mobile carrier | 2006 |
| 224-458 | Verizon Wireless | Mobile carrier | 2014 |
| 224-466 | Fractel | Internet / business phone carrier | 2021 |
| 224-467 | AT&T Mobility | Mobile carrier | 2022 |
| 224-479 | T-Mobile (including Sprint) | Mobile carrier | 2014 |
| 224-492 | AT&T Mobility | Mobile carrier | 2023 |
| 224-495 | AT&T Mobility | Mobile carrier | 2023 |
| 224-501 | Verizon Wireless | Mobile carrier | 2012 |
| 224-503 | T-Mobile (including Sprint) | Mobile carrier | 2014 |
| 224-522 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 224-525 | AT&T Mobility | Mobile carrier | 2023 |
| 224-545 | Verizon Wireless | Mobile carrier | 2007 |
| 224-548 | T-Mobile (including Sprint) | Mobile carrier | 2007 |
| 224-559 | AT&T Mobility | Mobile carrier | 2024 |
| 224-565 | T-Mobile (including Sprint) | Mobile carrier | 2007 |
| 224-571 | Verizon Wireless | Mobile carrier | 2015 |
| 224-586 | AT&T Mobility | Mobile carrier | 2024 |
| 224-608 | AT&T Mobility | Mobile carrier | 2024 |
| 224-620 | AT&T Mobility | Mobile carrier | 2024 |
| 224-626 | AT&T Mobility | Mobile carrier | 2024 |
| 224-628 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 224-636 | T-Mobile (including Sprint) | Mobile carrier | 2005 |
| 224-639 | Onvoy | Internet / business phone carrier | – |
| 224-641 | AT&T Mobility | Mobile carrier | 2025 |
| 224-645 | T-Mobile (including Sprint) | Mobile carrier | 2007 |
| 224-646 | AT&T Mobility | Mobile carrier | 2025 |
| 224-649 | Peerless Network Of Illinois | Internet / business phone carrier | 2008 |
| 224-657 | AT&T Mobility | Mobile carrier | 2025 |
| 224-658 | AT&T Mobility | Mobile carrier | 2025 |
| 224-682 | AT&T Mobility | Mobile carrier | 2026 |
| 224-683 | AT&T Mobility | Mobile carrier | 2026 |
| 224-684 | AT&T Mobility | Mobile carrier | 2026 |
| 224-688 | Verizon Wireless | Mobile carrier | 2006 |
| 224-692 | AT&T Mobility | Mobile carrier | 2026 |
| 224-723 | Verizon Wireless | Mobile carrier | 2006 |
| 224-763 | AT&T Mobility | Mobile carrier | 2016 |
| 224-799 | Fractel | Internet / business phone carrier | 2020 |
| 224-803 | T-Mobile (including Sprint) | Mobile carrier | 2012 |
| 224-808 | AT&T Mobility | Mobile carrier | 2015 |
| 224-904 | AT&T Mobility | Mobile carrier | 2016 |
| 224-927 | First Communications | Phone company | 2006 |
| 224-977 | Fractel | Internet / business phone carrier | 2019 |
| 312-209 | Verizon Wireless | Mobile carrier | – |
| 312-305 | Verizon Wireless | Mobile carrier | – |
| 312-310 | Verizon Wireless | Mobile carrier | – |
| 630-204 | Verizon Wireless | Mobile carrier | – |
| 630-205 | T-Mobile (including Sprint) | Mobile carrier | – |
| 630-263 | Verizon Wireless | Mobile carrier | – |
| 630-302 | Verizon Wireless | Mobile carrier | – |
| 630-309 | Verizon Wireless | Mobile carrier | – |
| 630-370 | Verizon Wireless | Mobile carrier | – |
| 630-404 | Verizon Wireless | Mobile carrier | – |
| 630-421 | Verizon Wireless | Mobile carrier | – |
| 630-459 | Verizon Wireless | Mobile carrier | – |
| 630-479 | T-Mobile (including Sprint) | Mobile carrier | – |
| 630-508 | Verizon Wireless | Mobile carrier | – |
| 630-533 | Verizon Wireless | Mobile carrier | – |
| 630-564 | Verizon Wireless | Mobile carrier | – |
| 630-569 | Verizon Wireless | Mobile carrier | – |
| 630-650 | Verizon Wireless | Mobile carrier | – |
| 630-651 | Verizon Wireless | Mobile carrier | – |
| 630-669 | T-Mobile (including Sprint) | Mobile carrier | – |
| 630-673 | T-Mobile (including Sprint) | Mobile carrier | – |
| 630-674 | T-Mobile (including Sprint) | Mobile carrier | – |
| 630-676 | Verizon Wireless | Mobile carrier | – |
| 630-707 | Verizon Wireless | Mobile carrier | – |
| 630-721 | Verizon Wireless | Mobile carrier | – |
| 630-732 | Verizon Wireless | Mobile carrier | – |
| 630-745 | T-Mobile (including Sprint) | Mobile carrier | – |
| 630-772 | Verizon Wireless | Mobile carrier | – |
| 630-816 | T-Mobile (including Sprint) | Mobile carrier | – |
| 630-817 | Verizon Wireless | Mobile carrier | – |
| 630-843 | Verizon Wireless | Mobile carrier | – |
| 630-939 | Verizon Wireless | Mobile carrier | – |
| 630-951 | Verizon Wireless | Mobile carrier | – |
| 630-975 | Verizon Wireless | Mobile carrier | – |
| 630-989 | Verizon Wireless | Mobile carrier | – |
| 630-992 | Verizon Wireless | Mobile carrier | – |
| 708-204 | Verizon Wireless | Mobile carrier | – |
| 708-281 | Spok | Paging service | – |
| 708-302 | Verizon Wireless | Mobile carrier | – |
| 708-309 | Verizon Wireless | Mobile carrier | – |
| 708-370 | Verizon Wireless | Mobile carrier | – |
| 708-376 | Spok | Paging service | – |
| 708-404 | Verizon Wireless | Mobile carrier | – |
| 708-417 | T-Mobile (including Sprint) | Mobile carrier | – |
| 708-421 | Verizon Wireless | Mobile carrier | – |
| 708-451 | Verizon Wireless | Mobile carrier | – |
| 708-454 | Spok | Paging service | – |
| 708-461 | Spok | Paging service | – |
| 708-472 | Verizon Wireless | Mobile carrier | – |
| 708-508 | Verizon Wireless | Mobile carrier | – |
| 708-533 | Verizon Wireless | Mobile carrier | – |
| 708-569 | American Messaging Services | Paging service | 2001 |
| 708-644 | Spok | Paging service | – |
| 708-650 | Verizon Wireless | Mobile carrier | – |
| 708-651 | Verizon Wireless | Mobile carrier | – |
| 708-707 | Verizon Wireless | Mobile carrier | – |
| 708-721 | Verizon Wireless | Mobile carrier | – |
| 708-732 | Verizon Wireless | Mobile carrier | – |
| 708-772 | Verizon Wireless | Mobile carrier | – |
| 708-774 | T-Mobile (including Sprint) | Mobile carrier | – |
| 708-806 | Verizon Wireless | Mobile carrier | – |
| 708-817 | American Messaging Services | Paging service | 2001 |
| 708-951 | Verizon Wireless | Mobile carrier | – |
| 708-975 | Verizon Wireless | Mobile carrier | – |
| 708-989 | Verizon Wireless | Mobile carrier | – |
| 708-992 | American Messaging Services | Paging service | 2001 |
| 815-241 | American Messaging Services | Paging service | – |
| 847-203 | Spok | Paging service | – |
| 847-204 | Verizon Wireless | Mobile carrier | – |
| 847-205 | AT&T (local phone) | Local phone company | – |
| 847-206 | American Messaging Services | Paging service | 2001 |
| 847-208 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 847-210 | Spok | Paging service | – |
| 847-216 | Spok | Paging service | – |
| 847-218 | Spok | Paging service | – |
| 847-224 | AT&T Mobility | Mobile carrier | 2001 |
| 847-225 | Spok | Paging service | – |
| 847-226 | AT&T Mobility | Mobile carrier | – |
| 847-237 | Spok | Paging service | – |
| 847-239 | Teleport Communications America | Internet / business phone carrier | – |
| 847-272 | AT&T (local phone) | Local phone company | – |
| 847-274 | AT&T Mobility | Mobile carrier | – |
| 847-275 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-291 | AT&T (local phone) | Local phone company | – |
| 847-293 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-302 | Verizon Wireless | Mobile carrier | – |
| 847-309 | Verizon Wireless | Mobile carrier | – |
| 847-313 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 847-322 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-323 | AT&T Mobility | Mobile carrier | – |
| 847-326 | AT&T (local phone) | Local phone company | – |
| 847-331 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-333 | Spok | Paging service | – |
| 847-338 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-339 | Spok | Paging service | – |
| 847-343 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-355 | Spok | Paging service | – |
| 847-361 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-365 | Spok | Paging service | – |
| 847-370 | Verizon Wireless | Mobile carrier | – |
| 847-372 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-389 | American Messaging Services | Paging service | 2001 |
| 847-400 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 847-401 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-402 | AT&T (local phone) | Local phone company | – |
| 847-404 | Verizon Wireless | Mobile carrier | – |
| 847-409 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-412 | AT&T (local phone) | Local phone company | – |
| 847-414 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-417 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-418 | Teleport Communications America | Internet / business phone carrier | – |
| 847-420 | AT&T Mobility | Mobile carrier | – |
| 847-421 | Verizon Wireless | Mobile carrier | – |
| 847-456 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-477 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-479 | Spok | Paging service | – |
| 847-480 | AT&T (local phone) | Local phone company | – |
| 847-498 | AT&T (local phone) | Local phone company | – |
| 847-504 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 847-508 | Verizon Wireless | Mobile carrier | – |
| 847-509 | AT&T (local phone) | Local phone company | – |
| 847-513 | AT&T (local phone) | Local phone company | – |
| 847-514 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-521 | Teleport Communications America | Internet / business phone carrier | – |
| 847-529 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-530 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-533 | Verizon Wireless | Mobile carrier | – |
| 847-547 | American Messaging Services | Paging service | 2001 |
| 847-559 | AT&T (local phone) | Local phone company | – |
| 847-562 | AT&T (local phone) | Local phone company | – |
| 847-564 | AT&T (local phone) | Local phone company | – |
| 847-569 | American Messaging Services | Paging service | 2001 |
| 847-571 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-612 | AT&T Mobility | Mobile carrier | – |
| 847-650 | Verizon Wireless | Mobile carrier | – |
| 847-651 | Verizon Wireless | Mobile carrier | – |
| 847-656 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 847-664 | AT&T (local phone) | Local phone company | – |
| 847-667 | AT&T (local phone) | Local phone company | – |
| 847-682 | AT&T Mobility | Mobile carrier | – |
| 847-684 | Spok | Paging service | – |
| 847-686 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 847-687 | AT&T Mobility | Mobile carrier | – |
| 847-691 | AT&T Mobility | Mobile carrier | 2001 |
| 847-707 | Verizon Wireless | Mobile carrier | – |
| 847-708 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 847-714 | AT&T (local phone) | Local phone company | – |
| 847-715 | Teleport Communications America | Internet / business phone carrier | – |
| 847-721 | Verizon Wireless | Mobile carrier | – |
| 847-722 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-732 | Verizon Wireless | Mobile carrier | – |
| 847-736 | AT&T Mobility | Mobile carrier | – |
| 847-753 | AT&T (local phone) | Local phone company | – |
| 847-757 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-769 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-770 | AT&T Mobility | Mobile carrier | 2001 |
| 847-772 | Verizon Wireless | Mobile carrier | – |
| 847-774 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-778 | AT&T Mobility | Mobile carrier | – |
| 847-790 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 847-791 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-799 | American Messaging Services | Paging service | 2001 |
| 847-800 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-817 | American Messaging Services | Paging service | 2001 |
| 847-830 | AT&T Mobility | Mobile carrier | – |
| 847-840 | AT&T Mobility | Mobile carrier | – |
| 847-845 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-849 | AT&T (local phone) | Local phone company | – |
| 847-858 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-863 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-867 | AT&T Mobility | Mobile carrier | – |
| 847-877 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-878 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-896 | Indiana Paging Network | Paging service | – |
| 847-897 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 847-903 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-910 | AT&T Mobility | Mobile carrier | – |
| 847-919 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 847-922 | AT&T Mobility | Mobile carrier | – |
| 847-924 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-942 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-946 | Verizon Wireless | Mobile carrier | – |
| 847-951 | Verizon Wireless | Mobile carrier | – |
| 847-962 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-971 | T-Mobile (including Sprint) | Mobile carrier | – |
| 847-974 | Spok | Paging service | – |
| 847-975 | Verizon Wireless | Mobile carrier | – |
| 847-989 | Verizon Wireless | Mobile carrier | – |
| 847-992 | American Messaging Services | Paging service | 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.