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

KNOX CITY prefixes in area code 940

NANPA records 3 assigned NXX blocks to rate center KNOX CITY in area code 940, 0.6% of the 506 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. 2 holders hold those blocks, the largest being VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW (2), SANTA ROSA TELEPHONE COOPERATIVE, INC. (1). The earliest assignment on record here is 2001-04-04 and the most recent 2016-08-15. 1 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 code 660 – overlay codes cover the same geography, so a rate center is served by all of them.

3 assigned blocks – 0.6% of 940
2 holders of record
1 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
940-316 Windstream VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 2016-08-15 yes yes
940-657 SANTA ROSA TELEPHONE COOPERATIVE, INC. 2001-04-04 no yes
940-658 Windstream VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW – no 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
VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW Windstream 2 66.7%
SANTA ROSA TELEPHONE COOPERATIVE, INC. – 1 33.3%

Frequently asked

Which prefixes belong to KNOX CITY in area code 940?

3 blocks: 316, 657, 658. The table above gives the holder of each.

Which carriers have numbers in KNOX CITY?

VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW (2 blocks), SANTA ROSA TELEPHONE COOPERATIVE, INC. (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is KNOX CITY 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 940

All 506 prefixes in 940