SUMMUM prefixes in area code 309
NANPA records 3 assigned NXX blocks to rate center SUMMUM 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 NEW CINGULAR WIRELESS PCS, LLC - IL (2), MID CENTURY TEL. COOP., INC. (1). The earliest assignment on record here is 2021-08-25 and the most recent 2026-06-24. 1 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 |
|---|---|---|---|---|
| 309-500 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2021-08-25 | no | yes |
| 309-759 | MID CENTURY TEL. COOP., INC. | – | no | yes |
| 309-991 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2026-06-24 | 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 |
|---|---|---|---|
| NEW CINGULAR WIRELESS PCS, LLC - IL | AT&T | 2 | 66.7% |
| MID CENTURY TEL. COOP., INC. | – | 1 | 33.3% |
Frequently asked
Which prefixes belong to SUMMUM in area code 309?
3 blocks: 500, 759, 991. The table above gives the holder of each.
Which carriers have numbers in SUMMUM?
NEW CINGULAR WIRELESS PCS, LLC - IL (2 blocks), MID CENTURY TEL. COOP., INC. (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is SUMMUM 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.