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

GREEN VLY prefixes in area code 309

NANPA records 3 assigned NXX blocks to rate center GREEN VLY in area code 309, 0.4% of the 786 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 BRIGHTSPEED OF ILLINOIS, LLC (1), ONVOY SPECTRUM, LLC (1), MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL (1). The earliest assignment on record here is 2024-04-16 and the most recent 2024-04-16. 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 309
3 holders of record
2 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
309-352 Brightspeed BRIGHTSPEED OF ILLINOIS, LLC – no yes
309-956 Charter ONVOY SPECTRUM, LLC 2024-04-16 yes yes
309-977 MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL – 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
BRIGHTSPEED OF ILLINOIS, LLC Brightspeed 1 33.3%
ONVOY SPECTRUM, LLC Charter 1 33.3%
MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL – 1 33.3%

Frequently asked

Which prefixes belong to GREEN VLY in area code 309?

3 blocks: 352, 956, 977. The table above gives the holder of each.

Which carriers have numbers in GREEN VLY?

BRIGHTSPEED OF ILLINOIS, LLC (1 block), ONVOY SPECTRUM, LLC (1 block), MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL (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 VLY 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 309

All 786 prefixes in 309