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

MANSFIELD prefixes in area code 417

NANPA records 3 assigned NXX blocks to rate center MANSFIELD in area code 417, 0.4% 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. 3 holders hold those blocks, the largest being NEW CINGULAR WIRELESS PCS, LLC - IL (1), BRIGHTSPEED OF MISSOURI, LLC (1), FRACTEL, LLC (1). The earliest assignment on record here is 2003-12-12 and the most recent 2019-12-05. 3 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 217, 272, 318, 419 – overlay codes cover the same geography, so a rate center is served by all of them.

3 assigned blocks – 0.4% of 417
3 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
417-554 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2003-12-12 yes yes
417-924 Brightspeed BRIGHTSPEED OF MISSOURI, LLC – yes yes
417-946 FRACTEL, LLC 2019-12-05 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%
BRIGHTSPEED OF MISSOURI, LLC Brightspeed 1 33.3%
FRACTEL, LLC – 1 33.3%

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 MANSFIELD in area code 417?

3 blocks: 554, 924, 946. The table above gives the holder of each.

Which carriers have numbers in MANSFIELD?

NEW CINGULAR WIRELESS PCS, LLC - IL (1 block), BRIGHTSPEED OF MISSOURI, LLC (1 block), FRACTEL, LLC (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is MANSFIELD 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 417

All 711 prefixes in 417