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

SEMINOLE prefixes in area code 405

NANPA records 8 assigned NXX blocks to rate center SEMINOLE in area code 405, 1.0% of the 783 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. 5 holders hold those blocks, the largest being SOUTHWESTERN BELL (3), T-MOBILE USA, INC. (2), UNITED STATES CELLULAR - OK (1). The earliest assignment on record here is 2001-11-09 and the most recent 2018-10-31. 7 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 432, 572 – overlay codes cover the same geography, so a rate center is served by all of them.

8 assigned blocks – 1% of 405
5 holders of record
7 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
405-220 UNITED STATES CELLULAR - OK – yes yes
405-303 AT&T SOUTHWESTERN BELL – yes yes
405-380 AT&T SOUTHWESTERN BELL – yes yes
405-382 AT&T SOUTHWESTERN BELL – no yes
405-584 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2001-11-09 yes yes
405-716 Lumen LEVEL 3 COMMUNICATIONS, LLC - OK 2002-05-29 yes yes
405-746 T-Mobile T-MOBILE USA, INC. 2017-08-01 yes yes
405-851 T-Mobile T-MOBILE USA, INC. 2018-10-31 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
SOUTHWESTERN BELL AT&T 3 37.5%
T-MOBILE USA, INC. T-Mobile 2 25%
UNITED STATES CELLULAR - OK – 1 12.5%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 1 12.5%
LEVEL 3 COMMUNICATIONS, LLC - OK Lumen 1 12.5%

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 SEMINOLE in area code 405?

8 blocks: 220, 303, 380, 382, 584, 716, 746, 851. The table above gives the holder of each.

Which carriers have numbers in SEMINOLE?

SOUTHWESTERN BELL (3 blocks), T-MOBILE USA, INC. (2 blocks), UNITED STATES CELLULAR - OK (1 block), NEW CINGULAR WIRELESS PCS, LLC - IL (1 block), LEVEL 3 COMMUNICATIONS, LLC - OK (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is SEMINOLE 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 405

All 783 prefixes in 405