Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records
NORTHBROOK prefixes in area code 847
NANPA records 122 assigned NXX blocks to rate center NORTHBROOK in area code 847, 15.5% of the 786 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. 12 holders hold those blocks, the largest being T-MOBILE USA, INC. (36), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL (18), ILLINOIS BELL TEL CO (18). The earliest assignment on record here is 2001-02-22 and the most recent 2002-03-13. 52 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 224, 312, 630, 708 – overlay codes cover the same geography, so a rate center is served by all of them.
122 assigned blocks – 15.5% of 847
12 holders of record
52 of them pooled in 1,000-number lots
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 847-203 | Spok SPOK, INC. | – | no | yes |
| 847-204 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | – | no | yes |
| 847-205 | AT&T ILLINOIS BELL TEL CO | – | no | yes |
| 847-206 | American Messaging AMERICAN MESSAGING SERVICES, LLC | 2001-04-23 | no | yes |
| 847-208 | T-Mobile T-MOBILE USA, INC. | 2002-03-13 | no | yes |
| 847-210 | Spok SPOK, INC. | – | no | yes |
| 847-216 | Spok SPOK, INC. | – | no | yes |
| 847-218 | Spok SPOK, INC. | – | no | yes |
| 847-224 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2001-02-22 | no | yes |
| 847-225 | Spok SPOK, INC. | – | no | yes |
| 847-226 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 847-237 | Spok SPOK, INC. | – | no | yes |
| 847-239 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - IL | – | yes | yes |
| 847-272 | AT&T ILLINOIS BELL TEL CO | – | no | yes |
| 847-274 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 847-275 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 847-291 | AT&T ILLINOIS BELL TEL CO | – | no | yes |
| 847-293 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 847-302 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | – | no | yes |
| 847-309 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | – | no | yes |
| 847-313 | Lumen LEVEL 3 COMMUNICATIONS, LLC - IL | – | yes | yes |
| 847-322 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 847-323 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 847-326 | AT&T ILLINOIS BELL TEL CO | – | no | yes |
| 847-331 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 847-333 | Spok SPOK, INC. | – | no | yes |
| 847-338 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 847-339 | Spok SPOK, INC. | – | no | yes |
| 847-343 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 847-355 | Spok SPOK, INC. | – | no | yes |
| 847-361 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 847-365 | Spok SPOK, INC. | – | no | yes |
| 847-370 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | – | no | yes |
| 847-372 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 847-389 | American Messaging AMERICAN MESSAGING SERVICES, LLC | 2001-04-23 | no | yes |
| 847-400 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | – | yes | yes |
| 847-401 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 847-402 | AT&T ILLINOIS BELL TEL CO | – | no | yes |
| 847-404 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | – | no | yes |
| 847-409 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 847-412 | AT&T ILLINOIS BELL TEL CO | – | yes | yes |
| 847-414 | T-Mobile T-MOBILE USA, INC. | – | no | yes |
| 847-417 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 847-418 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - IL | – | yes | yes |
| 847-420 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 847-421 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | – | no | yes |
| 847-456 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 847-477 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 847-479 | Spok SPOK, INC. | – | no | yes |
| 847-480 | AT&T ILLINOIS BELL TEL CO | – | no | yes |
| 847-498 | AT&T ILLINOIS BELL TEL CO | – | no | yes |
| 847-504 | Windstream PAETEC ITEL, LLC | – | yes | yes |
| 847-508 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | – | no | yes |
| 847-509 | AT&T ILLINOIS BELL TEL CO | – | no | yes |
| 847-513 | AT&T ILLINOIS BELL TEL CO | – | yes | yes |
| 847-514 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 847-521 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - IL | – | yes | yes |
| 847-529 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 847-530 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 847-533 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | – | no | yes |
| 847-547 | American Messaging AMERICAN MESSAGING SERVICES, LLC | 2001-04-23 | no | yes |
| 847-559 | AT&T ILLINOIS BELL TEL CO | – | no | yes |
| 847-562 | AT&T ILLINOIS BELL TEL CO | – | yes | yes |
| 847-564 | AT&T ILLINOIS BELL TEL CO | – | yes | yes |
| 847-569 | American Messaging AMERICAN MESSAGING SERVICES, LLC | 2001-04-16 | no | yes |
| 847-571 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 847-612 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 847-650 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | – | no | yes |
| 847-651 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | – | no | yes |
| 847-656 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | – | yes | yes |
| 847-664 | AT&T ILLINOIS BELL TEL CO | – | yes | yes |
| 847-667 | AT&T ILLINOIS BELL TEL CO | – | no | yes |
| 847-682 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 847-684 | Spok SPOK, INC. | – | no | yes |
| 847-686 | Lumen LEVEL 3 COMMUNICATIONS, LLC - IL | – | yes | yes |
| 847-687 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 847-691 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2001-05-31 | no | yes |
| 847-707 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | – | no | yes |
| 847-708 | T-Mobile T-MOBILE USA, INC. | 2001-03-09 | yes | yes |
| 847-714 | AT&T ILLINOIS BELL TEL CO | – | yes | yes |
| 847-715 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - IL | – | yes | yes |
| 847-721 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | – | no | yes |
| 847-722 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 847-732 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | – | no | yes |
| 847-736 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 847-753 | AT&T ILLINOIS BELL TEL CO | – | no | yes |
| 847-757 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 847-769 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 847-770 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2001-07-11 | yes | yes |
| 847-772 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | – | no | yes |
| 847-774 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 847-778 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 847-790 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | yes | yes |
| 847-791 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 847-799 | American Messaging AMERICAN MESSAGING SERVICES, LLC | 2001-04-23 | no | yes |
| 847-800 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 847-817 | American Messaging AMERICAN MESSAGING SERVICES, LLC | 2001-04-16 | no | yes |
| 847-830 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 847-840 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 847-845 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 847-849 | AT&T ILLINOIS BELL TEL CO | – | yes | yes |
| 847-858 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 847-863 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 847-867 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 847-877 | T-Mobile T-MOBILE USA, INC. | – | no | yes |
| 847-878 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 847-896 | INDIANA PAGING NETWORK, INC. | – | no | yes |
| 847-897 | Lumen LEVEL 3 COMMUNICATIONS, LLC - IL | – | yes | yes |
| 847-903 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 847-910 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 847-919 | Lumen LEVEL 3 COMMUNICATIONS, LLC - IL | – | yes | yes |
| 847-922 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 847-924 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 847-942 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 847-946 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | – | no | yes |
| 847-951 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | – | no | yes |
| 847-962 | T-Mobile T-MOBILE USA, INC. | – | no | yes |
| 847-971 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 847-974 | Spok SPOK, INC. | – | no | yes |
| 847-975 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | – | no | yes |
| 847-989 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | – | no | yes |
| 847-992 | American Messaging AMERICAN MESSAGING SERVICES, LLC | 2001-04-16 | no | 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 |
|---|---|---|---|
| T-MOBILE USA, INC. | T-Mobile | 36 | 29.5% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | Verizon | 18 | 14.8% |
| ILLINOIS BELL TEL CO | AT&T | 18 | 14.8% |
| NEW CINGULAR WIRELESS PCS, LLC - IL | AT&T | 17 | 13.9% |
| SPOK, INC. | Spok | 13 | 10.7% |
| AMERICAN MESSAGING SERVICES, LLC | American Messaging | 7 | 5.7% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - IL | AT&T | 4 | 3.3% |
| LEVEL 3 COMMUNICATIONS, LLC - IL | Lumen | 4 | 3.3% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | Verizon | 2 | 1.6% |
| PAETEC ITEL, LLC | Windstream | 1 | 0.8% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Verizon | 1 | 0.8% |
| INDIANA PAGING NETWORK, INC. | – | 1 | 0.8% |
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 847?
122 blocks: 203, 204, 205, 206, 208, 210, 216, 218, 224, 225, 226, 237 and 110 more, all listed in the table above.
Which carriers have numbers in NORTHBROOK?
T-MOBILE USA, INC. (36 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL (18 blocks), ILLINOIS BELL TEL CO (18 blocks), NEW CINGULAR WIRELESS PCS, LLC - IL (17 blocks), SPOK, INC. (13 blocks), AMERICAN MESSAGING SERVICES, LLC (7 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.