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

STILLWATER prefixes in area code 405

NANPA records 26 assigned NXX blocks to rate center STILLWATER in area code 405, 3.3% 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. 10 holders hold those blocks, the largest being SOUTHWESTERN BELL (11), T-MOBILE USA, INC. (4), LEVEL 3 COMMUNICATIONS, LLC - OK (3). The earliest assignment on record here is 2001-08-17 and the most recent 2019-04-09. 18 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 572, 651 – overlay codes cover the same geography, so a rate center is served by all of them.

26 assigned blocks – 3.3% of 405
10 holders of record
18 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
405-269 T-Mobile T-MOBILE USA, INC. – yes yes
405-332 AT&T SOUTHWESTERN BELL – yes yes
405-334 Lumen LEVEL 3 COMMUNICATIONS, LLC - OK 2001-08-17 yes yes
405-338 T-Mobile T-MOBILE USA, INC. – yes yes
405-372 AT&T SOUTHWESTERN BELL – no yes
405-377 AT&T SOUTHWESTERN BELL – yes yes
405-385 AT&T SOUTHWESTERN BELL – yes yes
405-533 CHICKASAW TELECOMMUNICAIONS SERVICES, INC. – no yes
405-564 CSC VOICE, LLC – yes yes
405-571 Lumen LEVEL 3 COMMUNICATIONS, LLC - OK – yes yes
405-612 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – no yes
405-614 UNITED STATES CELLULAR - OK 2002-03-06 yes yes
405-624 AT&T SOUTHWESTERN BELL – no yes
405-678 CROSS WIRELESS, L.L.C. – no yes
405-707 AT&T SOUTHWESTERN BELL – no yes
405-714 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK – yes yes
405-742 AT&T SOUTHWESTERN BELL – yes yes
405-743 AT&T SOUTHWESTERN BELL – no yes
405-744 AT&T SOUTHWESTERN BELL – no yes
405-747 AT&T SOUTHWESTERN BELL – yes yes
405-762 T-Mobile T-MOBILE USA, INC. 2002-04-04 yes yes
405-780 AT&T SOUTHWESTERN BELL – yes yes
405-854 T-Mobile T-MOBILE USA, INC. 2019-04-09 yes yes
405-880 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK – yes yes
405-894 Lumen LEVEL 3 COMMUNICATIONS, LLC - OK 2018-06-25 yes yes
405-937 Onvoy ONVOY, LLC - OK 2016-06-17 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 11 42.3%
T-MOBILE USA, INC. T-Mobile 4 15.4%
LEVEL 3 COMMUNICATIONS, LLC - OK Lumen 3 11.5%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK Verizon 2 7.7%
CHICKASAW TELECOMMUNICAIONS SERVICES, INC. – 1 3.8%
CSC VOICE, LLC – 1 3.8%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 1 3.8%
UNITED STATES CELLULAR - OK – 1 3.8%
CROSS WIRELESS, L.L.C. – 1 3.8%
ONVOY, LLC - OK Onvoy 1 3.8%

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 STILLWATER in area code 405?

26 blocks: 269, 332, 334, 338, 372, 377, 385, 533, 564, 571, 612, 614 and 14 more, all listed in the table above.

Which carriers have numbers in STILLWATER?

SOUTHWESTERN BELL (11 blocks), T-MOBILE USA, INC. (4 blocks), LEVEL 3 COMMUNICATIONS, LLC - OK (3 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK (2 blocks), CHICKASAW TELECOMMUNICAIONS SERVICES, INC. (1 block), CSC VOICE, 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 STILLWATER 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