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

TEHACHAPI prefixes in area code 661

NANPA records 13 assigned NXX blocks to rate center TEHACHAPI in area code 661, 1.9% of the 674 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. 7 holders hold those blocks, the largest being T-MOBILE USA, INC. (3), NEW CINGULAR WIRELESS PCS, LLC (3), PACIFIC BELL (3). The earliest assignment on record here is 2001-11-13 and the most recent 2026-01-14. 12 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

13 assigned blocks – 1.9% of 661
7 holders of record
12 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
661-238 Bandwidth BANDWIDTH.COM CLEC, LLC - CA – yes yes
661-300 T-Mobile T-MOBILE USA, INC. 2002-01-16 yes yes
661-357 UTILITY TELECOM GROUP, LLC - CA – yes yes
661-518 Telnyx TELNYX LLC 2021-02-02 yes yes
661-614 AT&T NEW CINGULAR WIRELESS PCS, LLC 2023-08-28 yes yes
661-750 T-Mobile T-MOBILE USA, INC. 2001-11-13 yes yes
661-771 Lumen LEVEL 3 TELECOM OF CALIFORNIA, LP - CA – yes yes
661-781 AT&T NEW CINGULAR WIRELESS PCS, LLC 2026-01-14 yes yes
661-821 AT&T PACIFIC BELL – yes yes
661-822 AT&T PACIFIC BELL – no yes
661-823 AT&T PACIFIC BELL – yes yes
661-825 T-Mobile T-MOBILE USA, INC. – yes yes
661-972 AT&T NEW CINGULAR WIRELESS PCS, LLC – 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
T-MOBILE USA, INC. T-Mobile 3 23.1%
NEW CINGULAR WIRELESS PCS, LLC AT&T 3 23.1%
PACIFIC BELL AT&T 3 23.1%
BANDWIDTH.COM CLEC, LLC - CA Bandwidth 1 7.7%
UTILITY TELECOM GROUP, LLC - CA – 1 7.7%
TELNYX LLC Telnyx 1 7.7%
LEVEL 3 TELECOM OF CALIFORNIA, LP - CA Lumen 1 7.7%

Frequently asked

Which prefixes belong to TEHACHAPI in area code 661?

13 blocks: 238, 300, 357, 518, 614, 750, 771, 781, 821, 822, 823, 825 and 1 more, all listed in the table above.

Which carriers have numbers in TEHACHAPI?

T-MOBILE USA, INC. (3 blocks), NEW CINGULAR WIRELESS PCS, LLC (3 blocks), PACIFIC BELL (3 blocks), BANDWIDTH.COM CLEC, LLC - CA (1 block), UTILITY TELECOM GROUP, LLC - CA (1 block), TELNYX 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 TEHACHAPI 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 661

All 674 prefixes in 661