JOLIET prefixes in area code 815
NANPA records 62 assigned NXX blocks to rate center JOLIET in area code 815, 7.9% 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. 13 holders hold those blocks, the largest being T-MOBILE USA, INC. (16), NEW CINGULAR WIRELESS PCS, LLC - IL (14), ILLINOIS BELL TEL CO (14). The earliest assignment on record here is 2001-01-24 and the most recent 2022-10-11. 32 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 406, 779 – 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 |
|---|---|---|---|---|
| 815-203 | Spok SPOK, INC. | – | no | yes |
| 815-207 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - IL | – | yes | yes |
| 815-210 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 815-212 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 815-258 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 815-260 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 815-272 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | – | yes | yes |
| 815-274 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 815-280 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - IL | – | yes | yes |
| 815-302 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 815-325 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 815-341 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 815-342 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 815-405 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 815-409 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 2005-08-18 | yes | yes |
| 815-460 | FIRST COMMUNICATIONS, LLC | – | no | yes |
| 815-474 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 815-483 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 815-514 | T-Mobile T-MOBILE USA, INC. | 2001-01-24 | yes | yes |
| 815-530 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 815-531 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - IL | – | yes | yes |
| 815-545 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 815-546 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 815-553 | Windstream PAETEC ITEL, LLC | 2001-04-10 | yes | yes |
| 815-557 | T-Mobile METROPCS, INC. | – | yes | yes |
| 815-582 | T-Mobile T-MOBILE USA, INC. | 2005-10-06 | yes | yes |
| 815-600 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2003-07-14 | yes | yes |
| 815-603 | T-Mobile T-MOBILE USA, INC. | 2001-09-28 | no | yes |
| 815-630 | T-Mobile T-MOBILE USA, INC. | 2006-07-24 | yes | yes |
| 815-641 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 2008-01-21 | yes | yes |
| 815-651 | RCN TELECOM SERVICES OF ILLINIOS, INC. - IL | – | yes | yes |
| 815-666 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 2006-08-30 | yes | yes |
| 815-671 | Lumen LEVEL 3 COMMUNICATIONS, LLC - IL | – | yes | yes |
| 815-685 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 815-690 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 815-693 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 815-714 | Bandwidth BANDWIDTH.COM CLEC, LLC - IL | – | yes | yes |
| 815-715 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2001-05-22 | no | yes |
| 815-722 | AT&T ILLINOIS BELL TEL CO | – | no | yes |
| 815-723 | AT&T ILLINOIS BELL TEL CO | – | no | yes |
| 815-724 | AT&T ILLINOIS BELL TEL CO | – | no | yes |
| 815-725 | AT&T ILLINOIS BELL TEL CO | – | no | yes |
| 815-726 | AT&T ILLINOIS BELL TEL CO | – | no | yes |
| 815-727 | AT&T ILLINOIS BELL TEL CO | – | no | yes |
| 815-729 | AT&T ILLINOIS BELL TEL CO | – | no | yes |
| 815-730 | AT&T ILLINOIS BELL TEL CO | – | no | yes |
| 815-735 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 815-740 | AT&T ILLINOIS BELL TEL CO | – | no | yes |
| 815-741 | AT&T ILLINOIS BELL TEL CO | – | no | yes |
| 815-744 | AT&T ILLINOIS BELL TEL CO | – | no | yes |
| 815-763 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 2022-10-11 | yes | yes |
| 815-768 | AT&T ILLINOIS BELL TEL CO | – | yes | yes |
| 815-773 | AT&T ILLINOIS BELL TEL CO | – | no | yes |
| 815-774 | AT&T ILLINOIS BELL TEL CO | – | no | yes |
| 815-791 | T-Mobile T-MOBILE USA, INC. | 2001-07-24 | yes | yes |
| 815-823 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 815-846 | Lumen LEVEL 3 COMMUNICATIONS, LLC - IL | – | no | yes |
| 815-919 | T-Mobile T-MOBILE USA, INC. | 2001-02-23 | no | yes |
| 815-927 | Lumen LEVEL 3 COMMUNICATIONS, LLC - IL | – | yes | yes |
| 815-931 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | yes | yes |
| 815-955 | T-Mobile METROPCS, INC. | 2002-07-05 | yes | yes |
| 815-999 | T-Mobile T-MOBILE USA, INC. | 2003-07-14 | 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 |
|---|---|---|---|
| T-MOBILE USA, INC. | T-Mobile | 16 | 25.8% |
| NEW CINGULAR WIRELESS PCS, LLC - IL | AT&T | 14 | 22.6% |
| ILLINOIS BELL TEL CO | AT&T | 14 | 22.6% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | Verizon | 4 | 6.5% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - IL | AT&T | 3 | 4.8% |
| LEVEL 3 COMMUNICATIONS, LLC - IL | Lumen | 3 | 4.8% |
| METROPCS, INC. | T-Mobile | 2 | 3.2% |
| SPOK, INC. | Spok | 1 | 1.6% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | Verizon | 1 | 1.6% |
| FIRST COMMUNICATIONS, LLC | – | 1 | 1.6% |
| PAETEC ITEL, LLC | Windstream | 1 | 1.6% |
| RCN TELECOM SERVICES OF ILLINIOS, INC. - IL | – | 1 | 1.6% |
| BANDWIDTH.COM CLEC, LLC - IL | Bandwidth | 1 | 1.6% |
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 JOLIET in area code 815?
62 blocks: 203, 207, 210, 212, 258, 260, 272, 274, 280, 302, 325, 341 and 50 more, all listed in the table above.
Which carriers have numbers in JOLIET?
T-MOBILE USA, INC. (16 blocks), NEW CINGULAR WIRELESS PCS, LLC - IL (14 blocks), ILLINOIS BELL TEL CO (14 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL (4 blocks), TELEPORT COMMUNICATIONS AMERICA, LLC - IL (3 blocks), LEVEL 3 COMMUNICATIONS, LLC - IL (3 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is JOLIET 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.