Area codes · +1
Area code 283
Area code 283 is centred on Cincinnati, Ohio. We hold 423 allocated blocks for it across 22 rate centres, split 47% mobile, 3% landline and 49% VoIP.
The other area codes laid over 283
Area code 283 does not have Cincinnati to itself. 1 other code — 513 — serves the same rate centres, laid over the same ground rather than dividing it. That is an overlay: a new code added when the old one ran out of numbers, covering the same streets. Two neighbours can hold different area codes, so the code says roughly when a number was issued rather than where it sits.
5135,315 blocks, 25 rate centres, mostly mobile
Each holds its own blocks and its own carrier mix, so a 283 number and a 513 number from the same street can report different line types. Filtering Cincinnati by area code needs all 2 of them.
283 is not confined to Cincinnati itself: its blocks sit across 22 rate centres, named in the table below.
Ohio is split across 14 area codes — 740, 440, 937, 614, 513, 283 and others. By allocated blocks 283 is the 14th largest of them, holding 1% of the Ohio total.
Where 283 numbers are concentrated
NANPA truncates rate-centre names to ten characters and drops the spaces, which is why Ltl Miami and Newtonsvl are shortened. Names are reproduced as recorded rather than expanded — the abbreviation is the key the block data is filed under.
| Rate centre | Blocks | Share of 283 |
|---|---|---|
| Cincinnati | 153 | 36% |
| Hamilton | 65 | 15% |
| Clermont | 28 | 7% |
| Ltl Miami | 19 | 4% |
| Trenton | 19 | 4% |
| Lebanon | 18 | 4% |
| Mason | 14 | 3% |
| Middletown | 13 | 3% |
| Harrison | 11 | 3% |
| Morrow | 11 | 3% |
| Newtonsvl | 11 | 3% |
| Oxford | 11 | 3% |
| Shandon | 9 | 2% |
| Bethel | 7 | 2% |
| Bethany | 6 | 1% |
| Williamsbg | 6 | 1% |
| Waynesvl | 5 | 1% |
| Fayettevl | 4 | 1% |
| Seven Mile | 4 | 1% |
| Butlervl | 3 | 1% |
| Morningsun | 3 | 1% |
| So Lebanon | 3 | 1% |
Carriers holding the most 283 blocks
Onvoy122 blocks
AT&T Wireless104 blocks
T-Mobile Usa, Inc.29 blocks
Onvoy Spectrum26 blocks
Boost Subscriberco L.L.C.25 blocks
Verizon Wireless15 blocks
The largest holder, Onvoy, has 29% of the code.
These are original allocations. A number keeps its digits and its block when its subscriber moves network, so a ported 283 number still reports the carrier it started with. Closing that gap needs a live query against the routing database. How line type is derived.
Check a single 283 number, or run a whole list through the free cleaner — neither uploads anything.
Common questions
Where is area code 283?
Area code 283 covers Cincinnati, Ohio. It is not the only code there: 513 is an overlay on the same rate centres, so a Cincinnati, Ohio number can start with any of them.
Is a 283 number a mobile or a landline?
It can be either, and the digits do not say which. North American mobile and landline numbers share the same ranges, so the answer comes from the carrier holding the block. In 283 the split runs 47% mobile, 3% landline and 49% VoIP, so VoIP is the most likely single answer.
Which carriers hold 283 numbers?
The largest holders are Onvoy, AT&T Wireless, T-Mobile Usa, Inc.. That is the carrier the block was allocated to, which is not necessarily the network a given number sits on today.
How many 283 numbers are there?
The code holds 423 allocated blocks in our copy of the numbering plan. A block is 1,000 or 10,000 consecutive numbers depending on how deeply it has been pooled, so 283 covers on the order of 423,000 possible numbers — most of which have never been issued to anyone.