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

MADILL prefixes in area code 580

NANPA records 6 assigned NXX blocks to rate center MADILL in area code 580, 0.8% of the 741 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 (2), UNITED STATES CELLULAR - OK (1), ONVOY, LLC - OK (1). The earliest assignment on record here is 2002-05-01 and the most recent 2003-03-05. 6 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

6 assigned blocks – 0.8% of 580
5 holders of record
6 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
580-263 UNITED STATES CELLULAR - OK – yes yes
580-316 Onvoy ONVOY, LLC - OK – yes yes
580-672 CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 2003-03-05 yes yes
580-677 AT&T SOUTHWESTERN BELL – yes yes
580-795 AT&T SOUTHWESTERN BELL – yes yes
580-872 Lumen LEVEL 3 COMMUNICATIONS, LLC - OK 2002-05-01 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 2 33.3%
UNITED STATES CELLULAR - OK – 1 16.7%
ONVOY, LLC - OK Onvoy 1 16.7%
CHICKASAW TELECOMMUNICAIONS SERVICES, INC. – 1 16.7%
LEVEL 3 COMMUNICATIONS, LLC - OK Lumen 1 16.7%

Frequently asked

Which prefixes belong to MADILL in area code 580?

6 blocks: 263, 316, 672, 677, 795, 872. The table above gives the holder of each.

Which carriers have numbers in MADILL?

SOUTHWESTERN BELL (2 blocks), UNITED STATES CELLULAR - OK (1 block), ONVOY, LLC - OK (1 block), CHICKASAW TELECOMMUNICAIONS SERVICES, INC. (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 MADILL 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 580

All 741 prefixes in 580