Phone number in Ohio: 330 Area code
Area code 330 serves the state of Ohio. This area code was assigned on November 17th, 1995. On March 9th, 1996 it went into service. 330 is a General Purpose Code. 330 service area does overlap with 234 area codes. Dialing pattern for local calls within the same NPA (area code) is 10D. Carriers must provide permissive 1+10D dialing for Foreign NPA Local Calls in areas where they provide optional EAS