ILLINOISCY prefixes in area code 309
NANPA records 3 assigned NXX blocks to rate center ILLINOISCY 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 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL (2), ILLINOIS BELL TEL CO (1). The earliest assignment on record here is 2002-10-18 and the most recent 2021-01-11. 3 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 309-207 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 2002-10-18 | yes | yes |
| 309-791 | AT&T ILLINOIS BELL TEL CO | – | yes | yes |
| 309-850 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 2021-01-11 | 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
| Holder | Brand | Blocks | Share here |
|---|---|---|---|
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | Verizon | 2 | 66.7% |
| ILLINOIS BELL TEL CO | AT&T | 1 | 33.3% |
Frequently asked
Which prefixes belong to ILLINOISCY in area code 309?
3 blocks: 207, 791, 850. The table above gives the holder of each.
Which carriers have numbers in ILLINOISCY?
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL (2 blocks), ILLINOIS BELL TEL CO (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is ILLINOISCY 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.