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

SUNNYLAND prefixes in area code 309

NANPA records 4 assigned NXX blocks to rate center SUNNYLAND in area code 309, 0.5% 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 FRONTIER NORTH, INC. - IL (2), ONVOY, LLC (1), LEVEL 3 COMMUNICATIONS, LLC - IL (1). The earliest assignment on record here is 2001-05-21 and the most recent 2003-01-17. 4 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots. The same rate center name also appears in area code 870 – overlay codes cover the same geography, so a rate center is served by all of them.

4 assigned blocks – 0.5% of 309
3 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
309-505 Onvoy ONVOY, LLC 2003-01-17 yes yes
309-717 Lumen LEVEL 3 COMMUNICATIONS, LLC - IL 2002-02-14 yes yes
309-745 Frontier FRONTIER NORTH, INC. - IL – yes yes
309-819 Frontier FRONTIER NORTH, INC. - IL 2001-05-21 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 NORTH, INC. - IL Frontier 2 50%
ONVOY, LLC Onvoy 1 25%
LEVEL 3 COMMUNICATIONS, LLC - IL Lumen 1 25%

Frequently asked

Which prefixes belong to SUNNYLAND in area code 309?

4 blocks: 505, 717, 745, 819. The table above gives the holder of each.

Which carriers have numbers in SUNNYLAND?

FRONTIER NORTH, INC. - IL (2 blocks), ONVOY, LLC (1 block), LEVEL 3 COMMUNICATIONS, 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 SUNNYLAND 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