Area Code Atlas

NPA 283 reserved as overlay for 513

Area code 283 was reserved in 2000 as an overlay code for the 513 numbering plan area, anticipating future number exhaustion. Implementation was delayed due to a slowdown in demand.

Overlay of area code 513 with 283 planned

In 2000, area code 283 was reserved as an overlay for 513, but implementation was suspended due to economic downturn and number return issues.

Permissive 10-digit dialing for 513/283 overlay begins

Permissive 10-digit dialing for the planned 513/283 overlay began on January 15, 2001, allowing callers to use either 7 or 10 digits. The implementation was later suspended due to reduced demand for new numbers.

NPA 283 overlay on 513 announced

New NPA 283 to Overlay NPA 513 (Ohio)

Mandatory Dialing Date Established for NPA 283 (Ohio)

Suspension of 513/283 NPA Overlay (Ohio)

Overlay relief approved for 513 with new area code 283

On December 15, 2021, the Public Utilities Commission of Ohio approved an all-service overlay complex for the 513 area code, introducing area code 283 to address projected number exhaustion by late 2023.

NPA 283 overlay on 513 announced

NPA 283 to Overlay NPA 513 (Ohio)

Area code 283 overlay activated on 513

On April 28, 2023, area code 283 officially became available as an overlay for the 513 area code in Cincinnati, Ohio, addressing number exhaustion after the depletion of remaining number blocks in 513.