CLTLKJCKSN prefixes in area code 979
NANPA records 20 assigned NXX blocks to rate center CLTLKJCKSN in area code 979, 4.8% of the 413 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 (8), LEVEL 3 COMMUNICATIONS, LLC - TX (2), PEERLESS NETWORK OF TEXAS, LLC - TX (2). The earliest assignment on record here is 2001-12-05 and the most recent 2026-07-21. 17 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 979-258 | Lumen LEVEL 3 COMMUNICATIONS, LLC - TX | 2001-12-05 | yes | yes |
| 979-265 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 979-266 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 979-285 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 979-292 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 979-297 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 979-299 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 979-300 | Peerless PEERLESS NETWORK OF TEXAS, LLC - TX | 2004-04-29 | yes | yes |
| 979-316 | Lumen LEVEL 3 COMMUNICATIONS, LLC - TX | 2002-07-16 | yes | yes |
| 979-341 | Peerless PEERLESS NETWORK OF TEXAS, LLC - TX | – | yes | yes |
| 979-365 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2024-09-18 | yes | yes |
| 979-379 | Charter ONVOY SPECTRUM, LLC | 2021-01-04 | yes | yes |
| 979-388 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 979-417 | T-Mobile METROPCS, INC. | – | yes | yes |
| 979-418 | T-Mobile METROPCS, INC. | – | yes | yes |
| 979-424 | Spok SPOK, INC. | – | no | yes |
| 979-480 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 979-487 | T-Mobile AERIAL COMMUNICATIONS, INC. | – | yes | yes |
| 979-529 | Comcast COMCAST IP PHONE, LLC | – | yes | yes |
| 979-991 | Onvoy ONVOY, LLC - TX | 2026-07-21 | yes | no |
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 | 8 | 40% |
| LEVEL 3 COMMUNICATIONS, LLC - TX | Lumen | 2 | 10% |
| PEERLESS NETWORK OF TEXAS, LLC - TX | Peerless | 2 | 10% |
| AERIAL COMMUNICATIONS, INC. | T-Mobile | 2 | 10% |
| METROPCS, INC. | T-Mobile | 2 | 10% |
| ONVOY SPECTRUM, LLC | Charter | 1 | 5% |
| SPOK, INC. | Spok | 1 | 5% |
| COMCAST IP PHONE, LLC | Comcast | 1 | 5% |
| ONVOY, LLC - TX | Onvoy | 1 | 5% |
Frequently asked
Which prefixes belong to CLTLKJCKSN in area code 979?
20 blocks: 258, 265, 266, 285, 292, 297, 299, 300, 316, 341, 365, 379 and 8 more, all listed in the table above.
Which carriers have numbers in CLTLKJCKSN?
SOUTHWESTERN BELL (8 blocks), LEVEL 3 COMMUNICATIONS, LLC - TX (2 blocks), PEERLESS NETWORK OF TEXAS, LLC - TX (2 blocks), AERIAL COMMUNICATIONS, INC. (2 blocks), METROPCS, INC. (2 blocks), ONVOY SPECTRUM, 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 CLTLKJCKSN 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.