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

CARMEL VLY prefixes in area code 831

NANPA records 5 assigned NXX blocks to rate center CARMEL VLY in area code 831, 1.2% of the 406 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. 5 holders hold those blocks, the largest being COMMIO, LLC (1), ONVOY, LLC - CA (1), BANDWIDTH.COM CLEC, LLC - CA (1). The earliest assignment on record here is 2022-11-04 and the most recent 2022-11-04. 5 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

5 assigned blocks – 1.2% of 831
5 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
831-283 COMMIO, LLC 2022-11-04 yes yes
831-298 Onvoy ONVOY, LLC - CA – yes yes
831-308 Bandwidth BANDWIDTH.COM CLEC, LLC - CA – yes yes
831-652 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA – yes yes
831-659 AT&T PACIFIC BELL – 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
COMMIO, LLC – 1 20%
ONVOY, LLC - CA Onvoy 1 20%
BANDWIDTH.COM CLEC, LLC - CA Bandwidth 1 20%
LEVEL 3 COMMUNICATIONS, LLC - CA Lumen 1 20%
PACIFIC BELL AT&T 1 20%

Frequently asked

Which prefixes belong to CARMEL VLY in area code 831?

5 blocks: 283, 298, 308, 652, 659. The table above gives the holder of each.

Which carriers have numbers in CARMEL VLY?

COMMIO, LLC (1 block), ONVOY, LLC - CA (1 block), BANDWIDTH.COM CLEC, LLC - CA (1 block), LEVEL 3 COMMUNICATIONS, LLC - CA (1 block), PACIFIC BELL (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is CARMEL VLY 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 831

All 406 prefixes in 831