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

FONTANELLE prefixes in area code 641

NANPA records 3 assigned NXX blocks to rate center FONTANELLE in area code 641, 0.5% of the 584 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 NEW CINGULAR WIRELESS PCS, LLC - IL (1), UNITED STATES CELLULAR - IA (1), WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS (1). The earliest assignment on record here is 2009-01-13 and the most recent 2021-05-25. 3 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

3 assigned blocks – 0.5% of 641
3 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
641-241 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2021-05-25 yes yes
641-247 UNITED STATES CELLULAR - IA 2009-01-13 yes yes
641-745 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
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 1 33.3%
UNITED STATES CELLULAR - IA – 1 33.3%
WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS Windstream 1 33.3%

Frequently asked

Which prefixes belong to FONTANELLE in area code 641?

3 blocks: 241, 247, 745. The table above gives the holder of each.

Which carriers have numbers in FONTANELLE?

NEW CINGULAR WIRELESS PCS, LLC - IL (1 block), UNITED STATES CELLULAR - IA (1 block), WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is FONTANELLE 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 641

All 584 prefixes in 641