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

SNELLING prefixes in area code 209

NANPA records 3 assigned NXX blocks to rate center SNELLING in area code 209, 0.4% of the 784 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. 3 holders hold those blocks, the largest being ONVOY, LLC - CA (1), FRONTIER CALIFORNIA INC. (1), HD CARRIER LLC (1). 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 code 350 – overlay codes cover the same geography, so a rate center is served by all of them.

3 assigned blocks – 0.4% of 209
3 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
209-440 Onvoy ONVOY, LLC - CA – yes yes
209-563 Frontier FRONTIER CALIFORNIA INC. – yes yes
209-590 HD CARRIER 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 - CA Onvoy 1 33.3%
FRONTIER CALIFORNIA INC. Frontier 1 33.3%
HD CARRIER LLC – 1 33.3%

Frequently asked

Which prefixes belong to SNELLING in area code 209?

3 blocks: 440, 563, 590. The table above gives the holder of each.

Which carriers have numbers in SNELLING?

ONVOY, LLC - CA (1 block), FRONTIER CALIFORNIA INC. (1 block), HD CARRIER 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 SNELLING 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 209

All 784 prefixes in 209