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

DELLROY prefixes in area code 330

NANPA records 3 assigned NXX blocks to rate center DELLROY in area code 330, 0.4% of the 787 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 NUSO, LLC (1), LEVEL 3 COMMUNICATIONS, LLC - OH (1), FRONTIER NORTH, INC. - OH (1). The earliest assignment on record here is 2005-12-22 and the most recent 2022-10-28. 3 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

3 assigned blocks – 0.4% of 330
3 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
330-582 NUSO, LLC 2022-10-28 yes yes
330-681 Lumen LEVEL 3 COMMUNICATIONS, LLC - OH 2005-12-22 yes yes
330-735 Frontier FRONTIER NORTH, INC. - OH – 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
NUSO, LLC – 1 33.3%
LEVEL 3 COMMUNICATIONS, LLC - OH Lumen 1 33.3%
FRONTIER NORTH, INC. - OH Frontier 1 33.3%

Frequently asked

Which prefixes belong to DELLROY in area code 330?

3 blocks: 582, 681, 735. The table above gives the holder of each.

Which carriers have numbers in DELLROY?

NUSO, LLC (1 block), LEVEL 3 COMMUNICATIONS, LLC - OH (1 block), FRONTIER NORTH, INC. - OH (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is DELLROY 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 330

All 787 prefixes in 330