NORTHBROOK prefixes in area code 224
NANPA records 72 assigned NXX blocks to rate center NORTHBROOK in area code 224, 12.1% of the 595 blocks assigned in the code. A rate center is the billing geography a block is allocated to – NANPA truncates the name to ten characters, so read it as a NANPA label rather than a town. 10 holders hold those blocks, the largest being NEW CINGULAR WIRELESS PCS, LLC - IL (22), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL (19), T-MOBILE USA, INC. (18). The earliest assignment on record here is 2002-02-07 and the most recent 2026-09-02. 69 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots. The same rate center name also appears in area codes 312, 630, 708, 815 – overlay codes cover the same geography, so a rate center is served by all of them.
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 224-203 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 2011-09-17 | yes | yes |
| 224-205 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 2011-11-03 | yes | yes |
| 224-213 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 2005-10-31 | yes | yes |
| 224-221 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2008-10-15 | yes | yes |
| 224-223 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2008-10-15 | yes | yes |
| 224-226 | T-Mobile T-MOBILE USA, INC. | 2011-09-08 | yes | yes |
| 224-234 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 2005-10-31 | yes | yes |
| 224-235 | T-Mobile T-MOBILE USA, INC. | 2011-07-11 | yes | yes |
| 224-246 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 2011-08-11 | yes | yes |
| 224-261 | T-Mobile T-MOBILE USA, INC. | 2011-09-08 | yes | yes |
| 224-277 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 2010-09-02 | yes | yes |
| 224-282 | FIRST COMMUNICATIONS, LLC | – | yes | yes |
| 224-287 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 2016-11-21 | yes | yes |
| 224-305 | T-Mobile T-MOBILE USA, INC. | 2003-02-19 | yes | yes |
| 224-306 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | – | yes | yes |
| 224-309 | Onvoy ONVOY, LLC | 2023-06-26 | yes | yes |
| 224-316 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 2012-10-19 | yes | yes |
| 224-326 | Comcast COMCAST IP PHONE, LLC | 2013-04-23 | yes | yes |
| 224-330 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | 2005-09-23 | yes | yes |
| 224-336 | T-Mobile T-MOBILE USA, INC. | 2013-07-09 | yes | yes |
| 224-343 | T-Mobile T-MOBILE USA, INC. | 2007-09-29 | yes | yes |
| 224-355 | T-Mobile T-MOBILE USA, INC. | 2005-04-22 | yes | yes |
| 224-365 | Onvoy ONVOY, LLC | – | yes | yes |
| 224-374 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 2006-10-24 | yes | yes |
| 224-383 | FIRST COMMUNICATIONS, LLC | 2004-05-24 | yes | yes |
| 224-392 | T-Mobile T-MOBILE USA, INC. | 2002-09-23 | no | yes |
| 224-405 | Lumen CENTURYLINK COMMUNICATIONS, LLC | 2002-02-07 | no | yes |
| 224-406 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 2005-08-08 | yes | yes |
| 224-412 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 2013-07-18 | yes | yes |
| 224-415 | T-Mobile T-MOBILE USA, INC. | 2013-07-09 | yes | yes |
| 224-456 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 2006-04-27 | yes | yes |
| 224-458 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 2014-12-22 | yes | yes |
| 224-466 | FRACTEL, LLC | 2021-10-27 | yes | yes |
| 224-467 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2022-06-22 | yes | yes |
| 224-479 | T-Mobile T-MOBILE USA, INC. | 2014-10-24 | yes | yes |
| 224-492 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2023-01-10 | yes | yes |
| 224-495 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2023-04-25 | yes | yes |
| 224-501 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 2012-08-07 | yes | yes |
| 224-503 | T-Mobile T-MOBILE USA, INC. | 2014-10-24 | yes | yes |
| 224-522 | T-Mobile T-MOBILE USA, INC. | 2002-10-18 | no | yes |
| 224-525 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2023-10-13 | yes | yes |
| 224-545 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 2007-11-08 | yes | yes |
| 224-548 | T-Mobile T-MOBILE USA, INC. | 2007-09-29 | yes | yes |
| 224-559 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2024-01-10 | yes | yes |
| 224-565 | T-Mobile T-MOBILE USA, INC. | 2007-08-21 | yes | yes |
| 224-571 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 2015-09-16 | yes | yes |
| 224-586 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2024-02-05 | yes | yes |
| 224-608 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2024-04-30 | yes | yes |
| 224-620 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2024-09-24 | yes | yes |
| 224-626 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2024-12-09 | yes | yes |
| 224-628 | T-Mobile T-MOBILE USA, INC. | 2002-07-30 | yes | yes |
| 224-636 | T-Mobile T-MOBILE USA, INC. | 2005-04-22 | yes | yes |
| 224-639 | Onvoy ONVOY, LLC | – | yes | yes |
| 224-641 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2025-03-07 | yes | yes |
| 224-645 | T-Mobile T-MOBILE USA, INC. | 2007-06-05 | yes | yes |
| 224-646 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2025-05-20 | yes | yes |
| 224-649 | Peerless PEERLESS NETWORK OF ILLINOIS, LLC - IL | 2008-06-25 | yes | yes |
| 224-657 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2025-07-10 | yes | yes |
| 224-658 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2025-07-10 | yes | yes |
| 224-682 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2026-03-03 | yes | yes |
| 224-683 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2026-03-03 | yes | yes |
| 224-684 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2026-03-03 | yes | yes |
| 224-688 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 2006-05-18 | yes | yes |
| 224-692 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2026-09-02 | yes | no |
| 224-723 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 2006-12-21 | yes | yes |
| 224-763 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2016-07-21 | yes | yes |
| 224-799 | FRACTEL, LLC | 2020-11-27 | yes | yes |
| 224-803 | T-Mobile T-MOBILE USA, INC. | 2012-01-23 | yes | yes |
| 224-808 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2015-06-19 | yes | yes |
| 224-904 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2016-03-24 | yes | yes |
| 224-927 | FIRST COMMUNICATIONS, LLC | 2006-09-26 | yes | yes |
| 224-977 | FRACTEL, LLC | 2019-10-10 | yes | yes |
The holder is who received the block from the numbering administrator. It is not necessarily the carrier serving a given number: numbers move with their owners, and a pooled block is shared.
Who holds the blocks
| Holder | Brand | Blocks | Share here |
|---|---|---|---|
| NEW CINGULAR WIRELESS PCS, LLC - IL | AT&T | 22 | 30.6% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | Verizon | 19 | 26.4% |
| T-MOBILE USA, INC. | T-Mobile | 18 | 25% |
| FIRST COMMUNICATIONS, LLC | – | 3 | 4.2% |
| ONVOY, LLC | Onvoy | 3 | 4.2% |
| FRACTEL, LLC | – | 3 | 4.2% |
| COMCAST IP PHONE, LLC | Comcast | 1 | 1.4% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | Verizon | 1 | 1.4% |
| CENTURYLINK COMMUNICATIONS, LLC | Lumen | 1 | 1.4% |
| PEERLESS NETWORK OF ILLINOIS, LLC - IL | Peerless | 1 | 1.4% |
Same rate center in other codes
Overlay codes cover the same geography, so one rate center is served by all of them.
Frequently asked
Which prefixes belong to NORTHBROOK in area code 224?
72 blocks: 203, 205, 213, 221, 223, 226, 234, 235, 246, 261, 277, 282 and 60 more, all listed in the table above.
Which carriers have numbers in NORTHBROOK?
NEW CINGULAR WIRELESS PCS, LLC - IL (22 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL (19 blocks), T-MOBILE USA, INC. (18 blocks), FIRST COMMUNICATIONS, LLC (3 blocks), ONVOY, LLC (3 blocks), FRACTEL, LLC (3 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is NORTHBROOK a city?
It is a rate center – the unit NANPA allocates number blocks to. Its name is abbreviated to ten characters and is not necessarily a settlement: we print it as recorded rather than guess at the full name.