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

GRANDVIEW prefixes in area code 509

NANPA records 4 assigned NXX blocks to rate center GRANDVIEW 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), VOIP INNOVATIONS, LLC (1). The earliest assignment on record here is 2003-01-07 and the most recent 2023-07-12. 3 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 217, 319, 534, 682 – 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
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
509-203 Lumen LEVEL 3 COMMUNICATIONS, LLC - WA 2003-01-07 yes yes
509-402 Onvoy ONVOY, LLC - WA – yes yes
509-791 VoIP Innovations VOIP INNOVATIONS, LLC 2023-07-12 yes yes
509-882 Lumen UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA – 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
LEVEL 3 COMMUNICATIONS, LLC - WA Lumen 1 25%
ONVOY, LLC - WA Onvoy 1 25%
VOIP INNOVATIONS, LLC VoIP Innovations 1 25%
UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA Lumen 1 25%

Frequently asked

Which prefixes belong to GRANDVIEW in area code 509?

4 blocks: 203, 402, 791, 882. The table above gives the holder of each.

Which carriers have numbers in GRANDVIEW?

LEVEL 3 COMMUNICATIONS, LLC - WA (1 block), ONVOY, LLC - WA (1 block), VOIP INNOVATIONS, LLC (1 block), UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - 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 GRANDVIEW 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