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

ROCK CREEK prefixes in area code 440

NANPA records 3 assigned NXX blocks to rate center ROCK CREEK in area code 440, 0.4% of the 757 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. 2 holders hold those blocks, the largest being WINDSTREAM WESTERN RESERVE, INC. (2), GREAT WAVE BROADBAND SERVICES, LLC (1). The earliest assignment on record here is 2013-06-06 and the most recent 2013-06-18. 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 codes 208, 986 – overlay codes cover the same geography, so a rate center is served by all of them.

3 assigned blocks – 0.4% of 440
2 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
440-560 GREAT WAVE BROADBAND SERVICES, LLC 2013-06-18 yes yes
440-563 Windstream WINDSTREAM WESTERN RESERVE, INC. – yes yes
440-805 Windstream WINDSTREAM WESTERN RESERVE, INC. 2013-06-06 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
WINDSTREAM WESTERN RESERVE, INC. Windstream 2 66.7%
GREAT WAVE BROADBAND SERVICES, LLC – 1 33.3%

Frequently asked

Which prefixes belong to ROCK CREEK in area code 440?

3 blocks: 560, 563, 805. The table above gives the holder of each.

Which carriers have numbers in ROCK CREEK?

WINDSTREAM WESTERN RESERVE, INC. (2 blocks), GREAT WAVE BROADBAND SERVICES, 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 ROCK CREEK 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 440

All 757 prefixes in 440