JEFFERSON prefixes in area code 920
NANPA records 7 assigned NXX blocks to rate center JEFFERSON in area code 920, 0.9% of the 785 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. 5 holders hold those blocks, the largest being T-MOBILE USA, INC. (2), WISCONSIN BELL INC (2), TELEPORT COMMUNICATIONS AMERICA, LLC WI (1). The earliest assignment on record here is 2002-04-15 and the most recent 2002-04-15. 5 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 223, 430, 440, 458 – 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 |
|---|---|---|---|---|
| 920-541 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC WI | 2002-04-15 | yes | yes |
| 920-605 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 920-640 | American Messaging AMERICAN MESSAGING SERVICES, LLC | – | no | yes |
| 920-650 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | yes | yes |
| 920-674 | AT&T WISCONSIN BELL INC | – | no | yes |
| 920-675 | AT&T WISCONSIN BELL INC | – | yes | yes |
| 920-747 | T-Mobile T-MOBILE USA, INC. | – | 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 | 2 | 28.6% |
| WISCONSIN BELL INC | AT&T | 2 | 28.6% |
| TELEPORT COMMUNICATIONS AMERICA, LLC WI | AT&T | 1 | 14.3% |
| AMERICAN MESSAGING SERVICES, LLC | American Messaging | 1 | 14.3% |
| NEW CINGULAR WIRELESS PCS, LLC - IL | AT&T | 1 | 14.3% |
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 JEFFERSON in area code 920?
7 blocks: 541, 605, 640, 650, 674, 675, 747. The table above gives the holder of each.
Which carriers have numbers in JEFFERSON?
T-MOBILE USA, INC. (2 blocks), WISCONSIN BELL INC (2 blocks), TELEPORT COMMUNICATIONS AMERICA, LLC WI (1 block), AMERICAN MESSAGING SERVICES, LLC (1 block), NEW CINGULAR WIRELESS PCS, LLC - IL (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is JEFFERSON 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.