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

MORRILTON prefixes in area code 501

NANPA records 11 assigned NXX blocks to rate center MORRILTON in area code 501, 1.7% of the 631 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. 5 holders hold those blocks, the largest being SOUTHWESTERN BELL (5), NEW CINGULAR WIRELESS PCS, LLC - IL (3), LEVEL 3 COMMUNICATIONS, LLC - AR (1). The earliest assignment on record here is 2002-06-19 and the most recent 2021-03-16. 10 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

11 assigned blocks – 1.7% of 501
5 holders of record
10 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
501-208 AT&T SOUTHWESTERN BELL – yes yes
501-215 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2003-04-28 yes yes
501-242 Lumen LEVEL 3 COMMUNICATIONS, LLC - AR 2002-06-19 yes yes
501-289 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 2005-07-14 yes yes
501-354 AT&T SOUTHWESTERN BELL – no yes
501-452 STRATUS NETWORKS 2021-03-16 yes yes
501-477 AT&T SOUTHWESTERN BELL – yes yes
501-645 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
501-652 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
501-727 AT&T SOUTHWESTERN BELL – yes yes
501-977 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

HolderBrandBlocksShare here
SOUTHWESTERN BELL AT&T 5 45.5%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 3 27.3%
LEVEL 3 COMMUNICATIONS, LLC - AR Lumen 1 9.1%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR Verizon 1 9.1%
STRATUS NETWORKS – 1 9.1%

Frequently asked

Which prefixes belong to MORRILTON in area code 501?

11 blocks: 208, 215, 242, 289, 354, 452, 477, 645, 652, 727, 977. The table above gives the holder of each.

Which carriers have numbers in MORRILTON?

SOUTHWESTERN BELL (5 blocks), NEW CINGULAR WIRELESS PCS, LLC - IL (3 blocks), LEVEL 3 COMMUNICATIONS, LLC - AR (1 block), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR (1 block), STRATUS NETWORKS (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is MORRILTON 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 501

All 631 prefixes in 501