CASCADE prefixes in area code 563
NANPA records 3 assigned NXX blocks to rate center CASCADE in area code 563, 0.8% of the 388 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. 3 holders hold those blocks, the largest being LEVEL 3 COMMUNICATIONS, LLC - IA (1), T-MOBILE USA, INC. (1), CASCADE COMMUNICATIONS COMPANY (1). The earliest assignment on record here is 2018-06-28 and the most recent 2025-03-31. 2 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 208, 406, 920, 986 – 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 |
|---|---|---|---|---|
| 563-269 | Lumen LEVEL 3 COMMUNICATIONS, LLC - IA | 2018-06-28 | yes | yes |
| 563-772 | T-Mobile T-MOBILE USA, INC. | 2025-03-31 | yes | yes |
| 563-852 | CASCADE COMMUNICATIONS COMPANY | – | 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 |
|---|---|---|---|
| LEVEL 3 COMMUNICATIONS, LLC - IA | Lumen | 1 | 33.3% |
| T-MOBILE USA, INC. | T-Mobile | 1 | 33.3% |
| CASCADE COMMUNICATIONS COMPANY | – | 1 | 33.3% |
Frequently asked
Which prefixes belong to CASCADE in area code 563?
3 blocks: 269, 772, 852. The table above gives the holder of each.
Which carriers have numbers in CASCADE?
LEVEL 3 COMMUNICATIONS, LLC - IA (1 block), T-MOBILE USA, INC. (1 block), CASCADE COMMUNICATIONS COMPANY (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is CASCADE 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.