283 area code — Cincinnati, OH geographic
If a call shows area code 283, the number was issued in the Cincinnati area — a code active since 2023, on Eastern time. It is part of the 283/513 overlay complex — these codes share the same territory. Note that porting and VoIP mean a 283 number can be used from anywhere — the code marks where the number was assigned.
46 central-office prefixes are currently active in this code, spread across 14 code-holding carriers. Thousands-block pooling applies to 46 prefixes, so a single prefix can belong to several carriers. Its prefixes map to 22 distinct rate centers.
NANPA projects numbering capacity for the 283/513 complex to exhaust in 3Q 2073.
283 was created from 513 in 2023.
Dialing: 10D locally, 10D to other codes (1+10 digit permissible at each sps discretion.).
Use this page to decode where 283 numbers come from — and remember that spoofing means the screen can lie about everything except your own caution.
Largest localities in 283
| Locality (rate center) | Active prefixes | Also served by |
|---|---|---|
| Cincinnati | 14 | 513 |
| Hamilton | 6 | 513 |
| Clermont | 3 | 513 |
| Little Miami | 3 | 513 |
| Trenton | 2 | 513 |
| Lebanon (warren) | 2 | 513 |
| Morrow | 1 | 513 |
| Morning Sun | 1 | 513 |
| South Lebanon | 1 | 513 |
| Williamsburg | 1 | 513 |
FAQ
Is 283 a toll-free number?
No. 283 is a geographic code; calls are billed like any other domestic call. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.
Why do 513 and 283 cover the same place?
They are overlays: when a code runs low on numbers, a new code is added over the same territory instead of splitting it. The 283/513 complex shares one service area, and local calls are dialed with 10 digits.
Will 283 run out of numbers?
NANPA's current forecast projects exhaust in 3Q 2073 — decades of capacity remain.