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

GREEN LAKE prefixes in area code 920

NANPA records 6 assigned NXX blocks to rate center GREEN LAKE in area code 920, 0.8% of the 785 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. 4 holders hold those blocks, the largest being NEW CINGULAR WIRELESS PCS, LLC - IL (3), UNITED STATES CELLULAR - WI (1), BRIGHTSPEED OF NORTH CENTRAL WISCONSIN, LLC (1). The earliest assignment on record here is 2007-03-30 and the most recent 2007-03-30. 6 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

6 assigned blocks – 0.8% of 920
4 holders of record
6 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
920-229 UNITED STATES CELLULAR - WI – yes yes
920-294 Brightspeed BRIGHTSPEED OF NORTH CENTRAL WISCONSIN, LLC – yes yes
920-299 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
920-329 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
920-369 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
920-807 Charter CHARTER IP ENABLED SERVICES, LLC 2007-03-30 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
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 3 50%
UNITED STATES CELLULAR - WI – 1 16.7%
BRIGHTSPEED OF NORTH CENTRAL WISCONSIN, LLC Brightspeed 1 16.7%
CHARTER IP ENABLED SERVICES, LLC Charter 1 16.7%

Frequently asked

Which prefixes belong to GREEN LAKE in area code 920?

6 blocks: 229, 294, 299, 329, 369, 807. The table above gives the holder of each.

Which carriers have numbers in GREEN LAKE?

NEW CINGULAR WIRELESS PCS, LLC - IL (3 blocks), UNITED STATES CELLULAR - WI (1 block), BRIGHTSPEED OF NORTH CENTRAL WISCONSIN, LLC (1 block), CHARTER IP ENABLED 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 GREEN LAKE 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 920

All 785 prefixes in 920