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

NEWPORT prefixes in area code 509

NANPA records 4 assigned NXX blocks to rate center NEWPORT 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 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER (1), T-MOBILE USA, INC. (1), NEW CINGULAR WIRELESS PCS, LLC (1). The earliest assignment on record here is 2002-08-05 and the most recent 2002-08-05. 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 207, 220, 223, 252 – 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
509-447 Ziply Fiber ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER – yes yes
509-550 T-Mobile T-MOBILE USA, INC. – yes yes
509-589 AT&T NEW CINGULAR WIRELESS PCS, LLC 2002-08-05 yes yes
509-671 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA – 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
ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER Ziply Fiber 1 25%
T-MOBILE USA, INC. T-Mobile 1 25%
NEW CINGULAR WIRELESS PCS, LLC AT&T 1 25%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA Verizon 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 NEWPORT in area code 509?

4 blocks: 447, 550, 589, 671. The table above gives the holder of each.

Which carriers have numbers in NEWPORT?

ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER (1 block), T-MOBILE USA, INC. (1 block), NEW CINGULAR WIRELESS PCS, LLC (1 block), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is NEWPORT 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