WESTPLAINS prefixes in area code 417
NANPA records 11 assigned NXX blocks to rate center WESTPLAINS in area code 417, 1.5% of the 711 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 BRIGHTSPEED OF MISSOURI, LLC (5), NEW CINGULAR WIRELESS PCS, LLC - IL (3), METROPCS, INC. (1). The earliest assignment on record here is 2001-05-17 and the most recent 2026-01-21. 10 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 code 270 – 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 |
|---|---|---|---|---|
| 417-204 | T-Mobile METROPCS, INC. | – | yes | yes |
| 417-255 | Brightspeed BRIGHTSPEED OF MISSOURI, LLC | – | yes | yes |
| 417-256 | Brightspeed BRIGHTSPEED OF MISSOURI, LLC | – | no | yes |
| 417-257 | Brightspeed BRIGHTSPEED OF MISSOURI, LLC | – | yes | yes |
| 417-274 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2003-12-22 | yes | yes |
| 417-293 | UNITED STATES CELLULAR - MO | – | yes | yes |
| 417-372 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 2004-06-25 | yes | yes |
| 417-505 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2005-03-03 | yes | yes |
| 417-565 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2026-01-21 | yes | yes |
| 417-596 | Brightspeed BRIGHTSPEED OF MISSOURI, LLC | 2001-05-17 | yes | yes |
| 417-853 | Brightspeed BRIGHTSPEED OF MISSOURI, LLC | – | 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 |
|---|---|---|---|
| BRIGHTSPEED OF MISSOURI, LLC | Brightspeed | 5 | 45.5% |
| NEW CINGULAR WIRELESS PCS, LLC - IL | AT&T | 3 | 27.3% |
| METROPCS, INC. | T-Mobile | 1 | 9.1% |
| UNITED STATES CELLULAR - MO | – | 1 | 9.1% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | Verizon | 1 | 9.1% |
Frequently asked
Which prefixes belong to WESTPLAINS in area code 417?
11 blocks: 204, 255, 256, 257, 274, 293, 372, 505, 565, 596, 853. The table above gives the holder of each.
Which carriers have numbers in WESTPLAINS?
BRIGHTSPEED OF MISSOURI, LLC (5 blocks), NEW CINGULAR WIRELESS PCS, LLC - IL (3 blocks), METROPCS, INC. (1 block), UNITED STATES CELLULAR - MO (1 block), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is WESTPLAINS 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.