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

DUPO prefixes in area code 618

NANPA records 3 assigned NXX blocks to rate center DUPO in area code 618, 0.4% of the 786 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 HARRISONVILLE TEL. CO. (1), CHARTER IP ENABLED SERVICES, LLC (1), METROPCS, INC. (1). The earliest assignment on record here is 2012-11-21 and the most recent 2022-12-08. 2 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

3 assigned blocks – 0.4% of 618
3 holders of record
2 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
618-286 HARRISONVILLE TEL. CO. – no yes
618-601 Charter CHARTER IP ENABLED SERVICES, LLC 2012-11-21 yes yes
618-906 T-Mobile METROPCS, INC. 2022-12-08 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
HARRISONVILLE TEL. CO. – 1 33.3%
CHARTER IP ENABLED SERVICES, LLC Charter 1 33.3%
METROPCS, INC. T-Mobile 1 33.3%

Frequently asked

Which prefixes belong to DUPO in area code 618?

3 blocks: 286, 601, 906. The table above gives the holder of each.

Which carriers have numbers in DUPO?

HARRISONVILLE TEL. CO. (1 block), CHARTER IP ENABLED SERVICES, LLC (1 block), METROPCS, INC. (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is DUPO 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 618

All 786 prefixes in 618