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

MARSHALL prefixes in area code 660

NANPA records 9 assigned NXX blocks to rate center MARSHALL in area code 660, 1.7% of the 518 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 NEW CINGULAR WIRELESS PCS, LLC - IL (3), SOUTHWESTERN BELL (3), AERIAL COMMUNICATIONS, INC. (1). The earliest assignment on record here is 2001-05-10 and the most recent 2025-08-29. 9 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 codes 217, 269, 326, 430 – overlay codes cover the same geography, so a rate center is served by all of them.

9 assigned blocks – 1.7% of 660
5 holders of record
9 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
660-202 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2003-04-09 yes yes
660-229 T-Mobile AERIAL COMMUNICATIONS, INC. – yes yes
660-236 AT&T SOUTHWESTERN BELL 2001-05-10 yes yes
660-340 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2025-08-29 yes yes
660-631 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO – yes yes
660-717 Onvoy ONVOY, LLC - MO 2016-01-05 yes yes
660-815 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
660-831 AT&T SOUTHWESTERN BELL – yes yes
660-886 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
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 3 33.3%
SOUTHWESTERN BELL AT&T 3 33.3%
AERIAL COMMUNICATIONS, INC. T-Mobile 1 11.1%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO Verizon 1 11.1%
ONVOY, LLC - MO Onvoy 1 11.1%

Same rate center in other codes

Overlay codes cover the same geography, so one rate center is served by all of them.

Frequently asked

Which prefixes belong to MARSHALL in area code 660?

9 blocks: 202, 229, 236, 340, 631, 717, 815, 831, 886. The table above gives the holder of each.

Which carriers have numbers in MARSHALL?

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

Is MARSHALL 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 660

All 518 prefixes in 660