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

OSCEOLA prefixes in area code 574

NANPA records 13 assigned NXX blocks to rate center OSCEOLA in area code 574, 3.2% of the 403 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. 6 holders hold those blocks, the largest being OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC (4), INDIANA BELL TEL CO INC (4), ONVOY, LLC - IN (2). The earliest assignment on record here is 2001-01-04 and the most recent 2023-02-24. 11 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 315, 402, 417, 531 – overlay codes cover the same geography, so a rate center is served by all of them.

13 assigned blocks – 3.2% of 574
6 holders of record
11 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
574-329 T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC – yes yes
574-396 AT&T AT&T - LOCAL 2023-02-24 yes yes
574-444 Onvoy ONVOY, LLC - IN 2015-11-17 yes yes
574-607 T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC – yes yes
574-621 T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC – yes yes
574-651 AT&T INDIANA BELL TEL CO INC – yes yes
574-667 FRACTEL, LLC 2021-05-20 yes yes
574-674 AT&T INDIANA BELL TEL CO INC – no yes
574-675 AT&T INDIANA BELL TEL CO INC – yes yes
574-679 AT&T INDIANA BELL TEL CO INC – no yes
574-707 T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2001-01-04 yes yes
574-742 AT&T AT&T ENTERPRISES, LLC 2006-01-12 yes yes
574-777 Onvoy ONVOY, LLC - IN 2017-08-31 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
OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC T-Mobile 4 30.8%
INDIANA BELL TEL CO INC AT&T 4 30.8%
ONVOY, LLC - IN Onvoy 2 15.4%
AT&T - LOCAL AT&T 1 7.7%
FRACTEL, LLC – 1 7.7%
AT&T ENTERPRISES, LLC AT&T 1 7.7%

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 OSCEOLA in area code 574?

13 blocks: 329, 396, 444, 607, 621, 651, 667, 674, 675, 679, 707, 742 and 1 more, all listed in the table above.

Which carriers have numbers in OSCEOLA?

OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC (4 blocks), INDIANA BELL TEL CO INC (4 blocks), ONVOY, LLC - IN (2 blocks), AT&T - LOCAL (1 block), FRACTEL, LLC (1 block), AT&T ENTERPRISES, 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 OSCEOLA 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 574

All 403 prefixes in 574