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

BREWSTER prefixes in area code 509

NANPA records 4 assigned NXX blocks to rate center BREWSTER in area code 509, 0.5% of the 763 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 LEVEL 3 COMMUNICATIONS, LLC - WA (1), ONVOY, LLC - WA (1), ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER (1). The earliest assignment on record here is 2002-03-14 and the most recent 2002-03-14. 4 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 234, 308, 329, 330 – overlay codes cover the same geography, so a rate center is served by all of them.

4 assigned blocks – 0.5% of 509
4 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
509-587 Lumen LEVEL 3 COMMUNICATIONS, LLC - WA 2002-03-14 yes yes
509-645 Onvoy ONVOY, LLC - WA – yes yes
509-689 Ziply Fiber ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER – yes yes
509-733 AT&T NEW CINGULAR WIRELESS PCS, 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
LEVEL 3 COMMUNICATIONS, LLC - WA Lumen 1 25%
ONVOY, LLC - WA Onvoy 1 25%
ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER Ziply Fiber 1 25%
NEW CINGULAR WIRELESS PCS, LLC AT&T 1 25%

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 BREWSTER in area code 509?

4 blocks: 587, 645, 689, 733. The table above gives the holder of each.

Which carriers have numbers in BREWSTER?

LEVEL 3 COMMUNICATIONS, LLC - WA (1 block), ONVOY, LLC - WA (1 block), ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER (1 block), NEW CINGULAR WIRELESS PCS, 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 BREWSTER 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 509

All 763 prefixes in 509