ARDMORE prefixes in area code 580
NANPA records 22 assigned NXX blocks to rate center ARDMORE in area code 580, 3.0% 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. 9 holders hold those blocks, the largest being SOUTHWESTERN BELL (7), T-MOBILE USA, INC. (5), NEW CINGULAR WIRELESS PCS, LLC - IL (4). The earliest assignment on record here is 2001-03-23 and the most recent 2025-12-05. 17 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 256, 605, 931 – overlay codes cover the same geography, so a rate center is served by all of them.
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 580-220 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 580-221 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 580-222 | CHICKASAW TELECOMMUNICAIONS SERVICES, INC. | 2003-02-28 | yes | yes |
| 580-223 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 580-224 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 580-226 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 580-277 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 580-319 | AT&T SOUTHWESTERN BELL | 2001-03-23 | yes | yes |
| 580-340 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 580-341 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 580-359 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2024-04-08 | yes | yes |
| 580-465 | UNITED STATES CELLULAR - OK | – | yes | yes |
| 580-490 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 580-504 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 580-630 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2002-06-26 | no | yes |
| 580-685 | IP HORIZON LLC | 2025-12-05 | yes | yes |
| 580-692 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2025-12-05 | yes | yes |
| 580-768 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK | 2002-01-17 | yes | yes |
| 580-798 | Lumen LEVEL 3 COMMUNICATIONS, LLC - OK | 2002-05-01 | yes | yes |
| 580-818 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 580-826 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK | 2002-11-18 | yes | yes |
| 580-850 | T-Mobile T-MOBILE USA, INC. | – | 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
| Holder | Brand | Blocks | Share here |
|---|---|---|---|
| SOUTHWESTERN BELL | AT&T | 7 | 31.8% |
| T-MOBILE USA, INC. | T-Mobile | 5 | 22.7% |
| NEW CINGULAR WIRELESS PCS, LLC - IL | AT&T | 4 | 18.2% |
| CHICKASAW TELECOMMUNICAIONS SERVICES, INC. | – | 1 | 4.5% |
| UNITED STATES CELLULAR - OK | – | 1 | 4.5% |
| IP HORIZON LLC | – | 1 | 4.5% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK | Verizon | 1 | 4.5% |
| LEVEL 3 COMMUNICATIONS, LLC - OK | Lumen | 1 | 4.5% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK | Verizon | 1 | 4.5% |
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 ARDMORE in area code 580?
22 blocks: 220, 221, 222, 223, 224, 226, 277, 319, 340, 341, 359, 465 and 10 more, all listed in the table above.
Which carriers have numbers in ARDMORE?
SOUTHWESTERN BELL (7 blocks), T-MOBILE USA, INC. (5 blocks), NEW CINGULAR WIRELESS PCS, LLC - IL (4 blocks), CHICKASAW TELECOMMUNICAIONS SERVICES, INC. (1 block), UNITED STATES CELLULAR - OK (1 block), IP HORIZON 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 ARDMORE 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.