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

ELMORECITY prefixes in area code 580

NANPA records 3 assigned NXX blocks to rate center ELMORECITY in area code 580, 0.4% of the 741 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 OKLAHOMA, INC. (2), ONVOY SPECTRUM, LLC (1). The earliest assignment on record here is 2025-01-08 and the most recent 2025-01-08. 2 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 580
2 holders of record
2 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
580-441 Windstream WINDSTREAM OKLAHOMA, INC. – yes yes
580-578 Charter ONVOY SPECTRUM, LLC 2025-01-08 yes yes
580-788 Windstream WINDSTREAM OKLAHOMA, INC. – no 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 OKLAHOMA, INC. Windstream 2 66.7%
ONVOY SPECTRUM, LLC Charter 1 33.3%

Frequently asked

Which prefixes belong to ELMORECITY in area code 580?

3 blocks: 441, 578, 788. The table above gives the holder of each.

Which carriers have numbers in ELMORECITY?

WINDSTREAM OKLAHOMA, INC. (2 blocks), ONVOY SPECTRUM, 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 ELMORECITY 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 580

All 741 prefixes in 580