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

FISHLK VLY prefixes in area code 775

NANPA records 8 assigned NXX blocks to rate center FISHLK VLY in area code 775, 1.3% of the 601 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 ONVOY, LLC - NV (4), UTILITY TELECOM GROUP, LLC - NV (1), LEVEL 3 COMMUNICATIONS, LLC - NV (1). The earliest assignment on record here is 2001-07-10 and the most recent 2022-02-17. 3 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

8 assigned blocks – 1.3% of 775
5 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
775-231 UTILITY TELECOM GROUP, LLC - NV 2001-07-10 no yes
775-256 Onvoy ONVOY, LLC - NV – no yes
775-319 Lumen LEVEL 3 COMMUNICATIONS, LLC - NV – yes yes
775-330 Onvoy ONVOY, LLC - NV – no yes
775-572 AT&T NEVADA BELL – yes yes
775-599 Onvoy ONVOY, LLC - NV – no yes
775-628 Onvoy ONVOY, LLC - NV – no yes
775-966 TON80 COMMUNICATIONS, LLC 2022-02-17 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 - NV Onvoy 4 50%
UTILITY TELECOM GROUP, LLC - NV – 1 12.5%
LEVEL 3 COMMUNICATIONS, LLC - NV Lumen 1 12.5%
NEVADA BELL AT&T 1 12.5%
TON80 COMMUNICATIONS, LLC – 1 12.5%

Frequently asked

Which prefixes belong to FISHLK VLY in area code 775?

8 blocks: 231, 256, 319, 330, 572, 599, 628, 966. The table above gives the holder of each.

Which carriers have numbers in FISHLK VLY?

ONVOY, LLC - NV (4 blocks), UTILITY TELECOM GROUP, LLC - NV (1 block), LEVEL 3 COMMUNICATIONS, LLC - NV (1 block), NEVADA BELL (1 block), TON80 COMMUNICATIONS, 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 FISHLK 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 775

All 601 prefixes in 775