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

DUSON prefixes in area code 337

NANPA records 4 assigned NXX blocks to rate center DUSON in area code 337, 0.7% of the 599 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. 4 holders hold those blocks, the largest being ONVOY, LLC - LA (1), PAETEC ITEL, LLC (1), BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL (1). The earliest assignment on record here is 2005-04-26 and the most recent 2016-03-01. 4 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

4 assigned blocks – 0.7% of 337
4 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
337-561 Onvoy ONVOY, LLC - LA 2016-03-01 yes yes
337-803 Windstream PAETEC ITEL, LLC 2005-04-26 yes yes
337-873 AT&T BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL – yes yes
337-935 Comcast COMCAST IP PHONE, 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
ONVOY, LLC - LA Onvoy 1 25%
PAETEC ITEL, LLC Windstream 1 25%
BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL AT&T 1 25%
COMCAST IP PHONE, LLC Comcast 1 25%

Frequently asked

Which prefixes belong to DUSON in area code 337?

4 blocks: 561, 803, 873, 935. The table above gives the holder of each.

Which carriers have numbers in DUSON?

ONVOY, LLC - LA (1 block), PAETEC ITEL, LLC (1 block), BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL (1 block), COMCAST IP PHONE, 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 DUSON 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 337

All 599 prefixes in 337