CINCINNATI prefixes in area code 283
NANPA records 14 assigned NXX blocks to rate center CINCINNATI in area code 283, 28.6% of the 49 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. 10 holders hold those blocks, the largest being NEW CINGULAR WIRELESS PCS, LLC - IL (5), ONVOY, LLC - OH (1), COMMIO, LLC (1). The earliest assignment on record here is 2023-06-21 and the most recent 2025-12-16. 14 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 codes 513, 641 – overlay codes cover the same geography, so a rate center is served by all of them.
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 283-203 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2023-06-21 | yes | yes |
| 283-209 | Onvoy ONVOY, LLC - OH | 2023-07-27 | yes | yes |
| 283-220 | COMMIO, LLC | 2024-03-05 | yes | yes |
| 283-222 | WADDELL SOLUTIONS GROUP LLC | 2024-03-11 | yes | yes |
| 283-223 | CALLWORKS CORPORATION | 2024-04-17 | yes | yes |
| 283-224 | FIVE9, INC. | – | yes | yes |
| 283-227 | LEAP TELECOM, LLC | 2024-10-01 | yes | yes |
| 283-229 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2024-12-26 | yes | yes |
| 283-230 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2024-12-26 | yes | yes |
| 283-235 | WAVENATION, LLC | 2025-05-28 | yes | yes |
| 283-237 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2025-08-20 | yes | yes |
| 283-238 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2025-12-16 | yes | yes |
| 283-283 | Charter ONVOY SPECTRUM, LLC | 2023-07-06 | yes | yes |
| 283-333 | WIDE VOICE, LLC - OH | 2023-11-17 | 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 | 5 | 35.7% |
| ONVOY, LLC - OH | Onvoy | 1 | 7.1% |
| COMMIO, LLC | – | 1 | 7.1% |
| WADDELL SOLUTIONS GROUP LLC | – | 1 | 7.1% |
| CALLWORKS CORPORATION | – | 1 | 7.1% |
| FIVE9, INC. | – | 1 | 7.1% |
| LEAP TELECOM, LLC | – | 1 | 7.1% |
| WAVENATION, LLC | – | 1 | 7.1% |
| ONVOY SPECTRUM, LLC | Charter | 1 | 7.1% |
| WIDE VOICE, LLC - OH | – | 1 | 7.1% |
Same rate center in other codes
Overlay codes cover the same geography, so one rate center is served by all of them.
Frequently asked
Which prefixes belong to CINCINNATI in area code 283?
14 blocks: 203, 209, 220, 222, 223, 224, 227, 229, 230, 235, 237, 238 and 2 more, all listed in the table above.
Which carriers have numbers in CINCINNATI?
NEW CINGULAR WIRELESS PCS, LLC - IL (5 blocks), ONVOY, LLC - OH (1 block), COMMIO, LLC (1 block), WADDELL SOLUTIONS GROUP LLC (1 block), CALLWORKS CORPORATION (1 block), FIVE9, 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 CINCINNATI 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.