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

MATLOCK prefixes in area code 712

NANPA records 4 assigned NXX blocks to rate center MATLOCK in area code 712, 0.6% of the 633 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 NEW CINGULAR WIRELESS PCS, LLC - IL (3), NORTHERN IOWA TEL. CO. (1). The earliest assignment on record here is 2010-11-17 and the most recent 2010-11-17. 3 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

4 assigned blocks – 0.6% of 712
2 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
712-341 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
712-348 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
712-738 NORTHERN IOWA TEL. CO. – no yes
712-869 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2010-11-17 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
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 3 75%
NORTHERN IOWA TEL. CO. – 1 25%

Frequently asked

Which prefixes belong to MATLOCK in area code 712?

4 blocks: 341, 348, 738, 869. The table above gives the holder of each.

Which carriers have numbers in MATLOCK?

NEW CINGULAR WIRELESS PCS, LLC - IL (3 blocks), NORTHERN IOWA TEL. CO. (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is MATLOCK 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 712

All 633 prefixes in 712