KNOBNOSTER prefixes in area code 660
NANPA records 5 assigned NXX blocks to rate center KNOBNOSTER in area code 660, 1.0% of the 518 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. 4 holders hold those blocks, the largest being SOUTHWESTERN BELL (2), AERIAL COMMUNICATIONS, INC. (1), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO (1). The earliest assignment on record here is 2001-12-14 and the most recent 2026-10-15. 5 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 |
|---|---|---|---|---|
| 660-233 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2001-12-14 | yes | yes |
| 660-305 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 2026-10-15 | yes | no |
| 660-312 | Lumen CENTURYLINK COMMUNICATIONS, LLC | 2014-04-22 | yes | yes |
| 660-563 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 660-687 | AT&T SOUTHWESTERN BELL | – | 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 | 2 | 40% |
| AERIAL COMMUNICATIONS, INC. | T-Mobile | 1 | 20% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | Verizon | 1 | 20% |
| CENTURYLINK COMMUNICATIONS, LLC | Lumen | 1 | 20% |
Frequently asked
Which prefixes belong to KNOBNOSTER in area code 660?
5 blocks: 233, 305, 312, 563, 687. The table above gives the holder of each.
Which carriers have numbers in KNOBNOSTER?
SOUTHWESTERN BELL (2 blocks), AERIAL COMMUNICATIONS, INC. (1 block), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO (1 block), CENTURYLINK COMMUNICATIONS, 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 KNOBNOSTER 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.