Area code 283

Area code 283 at a glance

283 is one of 15 geographic area codes serving Ohio; NANPA records its in-service date as April 28, 2023. It is an overlay: 283 and 513 cover the same territory, so neighbors on the same street can have different area codes. It is in the Eastern time zone. The places with the most assigned exchanges include Cincinnati, Hamilton, Trenton, Mason, and Lebanon. By population, its largest named places are Cincinnati, Hamilton, Middletown, Mason, and Oxford.

Cities and towns in area code 283

283 holds 0.66% of the 7,301 central office codes assigned in Ohio, the 14th most of the state's 15 codes. 14 Census places could be matched to rate centers with 283 exchanges; the most populous are Cincinnati (315,000), Hamilton (63,953), Middletown (52,291), and Mason (36,046). Each place page lists the exact prefixes and carriers for that town.

Dialing 283 numbers

According to NANPA's dialing-plan data, local calls within 283 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits. Because local calls need the area code, business cards, signage and website copy should always show the full ten-digit number. NANPA's dialing-plan note for this code reads: "1+10 digit permissible at each SPs discretion."

Phone companies in area code 283

14 carriers hold the 48 central office codes assigned in 283. Onvoy, LLC - Oh has the most, with 19 (40%). 48 of the codes (100%) are pooled, meaning the code holder shares blocks of 1,000 numbers with other carriers instead of using all 10,000 itself. The code holder is not necessarily the carrier serving a given number today, since numbers can be ported between providers.

Rate centers and towns in 283

NANPA assigns each central office code to a rate center, the local calling area that decides whether a call is local or toll. 283 has codes in 22 rate centers. Rate center names in the file are abbreviations; where one matches a Census place, the table links to that city's local-number page.

283 code assignments over time

An area code has 800 possible central office codes that start with 2 through 9, a few of which are reserved (such as N11 service codes and 555). 48 are assigned in 283, 6.0% of 800. 47 were assigned in 2020 or later.

A local 283 number on Callata

Callata is a business phone system priced at $99 a month with 5 users included, then $20 per additional user. Callata Office includes up to 3 local business numbers, unlimited inbound calling, 1,500 pooled outbound US and Canada minutes per user each month, a browser softphone that can also ring your cell, voicemail with transcription, call recording with AI summaries, business-hours routing and E911 on every number.

Porting a number you already use in area code 283 is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.

AI agents are optional: an AI receptionist or scheduler can pick up when the team is busy or closed, take a message, send a text or email, or transfer the call. They draw on prepaid AI minutes ($0.25/minute), disclose that they are AI, and outbound AI calls require prior consent and are limited to 8am–9pm.