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

EPHRAIM prefixes in area code 435

NANPA records 3 assigned NXX blocks to rate center EPHRAIM in area code 435, 0.6% of the 501 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. 3 holders hold those blocks, the largest being MANTI TEL. CO. (1), T-MOBILE USA, INC. (1), NEW CINGULAR WIRELESS PCS, LLC (1). The earliest assignment on record here is 2010-07-23 and the most recent 2010-07-23. 2 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

3 assigned blocks – 0.6% of 435
3 holders of record
2 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
435-283 MANTI TEL. CO. – no yes
435-314 T-Mobile T-MOBILE USA, INC. 2010-07-23 yes yes
435-340 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
MANTI TEL. CO. – 1 33.3%
T-MOBILE USA, INC. T-Mobile 1 33.3%
NEW CINGULAR WIRELESS PCS, LLC AT&T 1 33.3%

Frequently asked

Which prefixes belong to EPHRAIM in area code 435?

3 blocks: 283, 314, 340. The table above gives the holder of each.

Which carriers have numbers in EPHRAIM?

MANTI TEL. CO. (1 block), T-MOBILE USA, INC. (1 block), NEW CINGULAR WIRELESS PCS, 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 EPHRAIM 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 435

All 501 prefixes in 435