NumberingData
Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records

DE WITT prefixes in area code 563

NANPA records 12 assigned NXX blocks to rate center DE WITT in area code 563, 3.1% 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. 2 holders hold those blocks, the largest being UNITED STATES CELLULAR - IA (10), WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS (2). The earliest assignment on record here is 2001-12-08 and the most recent 2025-03-21. 12 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 402, 517, 531, 660 – overlay codes cover the same geography, so a rate center is served by all of them.

12 assigned blocks – 3.1% of 563
2 holders of record
12 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
563-221 UNITED STATES CELLULAR - IA 2001-12-08 yes yes
563-226 UNITED STATES CELLULAR - IA 2025-03-21 yes yes
563-229 UNITED STATES CELLULAR - IA 2025-03-21 yes yes
563-234 UNITED STATES CELLULAR - IA 2025-03-21 yes yes
563-247 UNITED STATES CELLULAR - IA 2025-03-21 yes yes
563-248 UNITED STATES CELLULAR - IA 2025-03-21 yes yes
563-250 UNITED STATES CELLULAR - IA 2025-03-21 yes yes
563-251 UNITED STATES CELLULAR - IA 2025-03-21 yes yes
563-254 UNITED STATES CELLULAR - IA 2025-03-21 yes yes
563-256 UNITED STATES CELLULAR - IA 2025-03-21 yes yes
563-655 Windstream WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 2015-06-25 yes yes
563-659 Windstream WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS – 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

HolderBrandBlocksShare here
UNITED STATES CELLULAR - IA – 10 83.3%
WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS Windstream 2 16.7%

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 DE WITT in area code 563?

12 blocks: 221, 226, 229, 234, 247, 248, 250, 251, 254, 256, 655, 659. The table above gives the holder of each.

Which carriers have numbers in DE WITT?

UNITED STATES CELLULAR - IA (10 blocks), WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS (2 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is DE WITT 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.

Other rate centers in 563

All 388 prefixes in 563