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

CLAVERACK prefixes in area code 838

NANPA records 3 assigned NXX blocks to rate center CLAVERACK in area code 838, 1.3% of the 227 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- NY (1), VALSTAR, INC. - NY (1), CORETEL NEW YORK, INC. - NY (1). The earliest assignment on record here is 2019-02-14 and the most recent 2019-04-02. 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 518 – overlay codes cover the same geography, so a rate center is served by all of them.

3 assigned blocks – 1.3% of 838
3 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
838-206 Onvoy ONVOY, LLC- NY 2019-02-15 yes yes
838-209 VALSTAR, INC. - NY 2019-04-02 yes yes
838-435 CORETEL NEW YORK, INC. - NY 2019-02-14 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- NY Onvoy 1 33.3%
VALSTAR, INC. - NY – 1 33.3%
CORETEL NEW YORK, INC. - NY – 1 33.3%

Frequently asked

Which prefixes belong to CLAVERACK in area code 838?

3 blocks: 206, 209, 435. The table above gives the holder of each.

Which carriers have numbers in CLAVERACK?

ONVOY, LLC- NY (1 block), VALSTAR, INC. - NY (1 block), CORETEL NEW YORK, INC. - NY (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is CLAVERACK 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 838

All 227 prefixes in 838