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

EDELSTEIN prefixes in area code 309

NANPA records 3 assigned NXX blocks to rate center EDELSTEIN 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. 2 holders hold those blocks, the largest being ONVOY, LLC (2), FRONTIER NORTH, INC. - IL (1). The earliest assignment on record here is 2002-10-16 and the most recent 2021-07-28. 3 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
2 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
309-249 Frontier FRONTIER NORTH, INC. - IL – yes yes
309-250 Onvoy ONVOY, LLC 2002-10-16 yes yes
309-384 Onvoy ONVOY, LLC 2021-07-28 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
ONVOY, LLC Onvoy 2 66.7%
FRONTIER NORTH, INC. - IL Frontier 1 33.3%

Frequently asked

Which prefixes belong to EDELSTEIN in area code 309?

3 blocks: 249, 250, 384. The table above gives the holder of each.

Which carriers have numbers in EDELSTEIN?

ONVOY, LLC (2 blocks), FRONTIER NORTH, INC. - 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 EDELSTEIN 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