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

GREEN ISLE prefixes in area code 507

NANPA records 3 assigned NXX blocks to rate center GREEN ISLE in area code 507, 0.4% of the 766 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 FRONTIER COMMUNICATIONS OF MINNESOTA, INC. (1), CENTURYLINK COMMUNICATIONS, LLC (1), TON80 COMMUNICATIONS, LLC (1). The earliest assignment on record here is 2014-12-02 and the most recent 2022-02-16. 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 507
3 holders of record
2 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
507-326 Frontier FRONTIER COMMUNICATIONS OF MINNESOTA, INC. – no yes
507-570 Lumen CENTURYLINK COMMUNICATIONS, LLC 2014-12-02 yes yes
507-883 TON80 COMMUNICATIONS, LLC 2022-02-16 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
FRONTIER COMMUNICATIONS OF MINNESOTA, INC. Frontier 1 33.3%
CENTURYLINK COMMUNICATIONS, LLC Lumen 1 33.3%
TON80 COMMUNICATIONS, LLC – 1 33.3%

Frequently asked

Which prefixes belong to GREEN ISLE in area code 507?

3 blocks: 326, 570, 883. The table above gives the holder of each.

Which carriers have numbers in GREEN ISLE?

FRONTIER COMMUNICATIONS OF MINNESOTA, INC. (1 block), CENTURYLINK COMMUNICATIONS, LLC (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 GREEN ISLE 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 507

All 766 prefixes in 507