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

DE QUINCY prefixes in area code 337

NANPA records 5 assigned NXX blocks to rate center DE QUINCY in area code 337, 0.8% 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. 5 holders hold those blocks, the largest being METROPCS, INC. (1), NEW CINGULAR WIRELESS PCS, LLC - GA (1), ONVOY SPECTRUM, LLC (1). The earliest assignment on record here is 2004-03-16 and the most recent 2020-04-06. 4 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

5 assigned blocks – 0.8% of 337
5 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
337-222 T-Mobile METROPCS, INC. 2004-03-19 yes yes
337-317 AT&T NEW CINGULAR WIRELESS PCS, LLC - GA 2004-03-16 yes yes
337-386 Charter ONVOY SPECTRUM, LLC – yes yes
337-525 Lumen LEVEL 3 COMMUNICATIONS, LLC - LA 2020-04-06 yes yes
337-786 Brightspeed BRIGHTSPEED OF LOUISIANA, LLC – no 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
METROPCS, INC. T-Mobile 1 20%
NEW CINGULAR WIRELESS PCS, LLC - GA AT&T 1 20%
ONVOY SPECTRUM, LLC Charter 1 20%
LEVEL 3 COMMUNICATIONS, LLC - LA Lumen 1 20%
BRIGHTSPEED OF LOUISIANA, LLC Brightspeed 1 20%

Frequently asked

Which prefixes belong to DE QUINCY in area code 337?

5 blocks: 222, 317, 386, 525, 786. The table above gives the holder of each.

Which carriers have numbers in DE QUINCY?

METROPCS, INC. (1 block), NEW CINGULAR WIRELESS PCS, LLC - GA (1 block), ONVOY SPECTRUM, LLC (1 block), LEVEL 3 COMMUNICATIONS, LLC - LA (1 block), BRIGHTSPEED OF LOUISIANA, 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 DE QUINCY 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