What Area Codes/Prefixes in Indiana are in the Central time zone?

Approximatly 18 counties in Indiana observe Central time, and the rest observe Eastern Time. My question is this:



What area codes/prefix [ (xxx) - xxx ] exist in the area that observes central time (or where can I find this information)What Area Codes/Prefixes in Indiana are in the Central time zone?
here we go!!!!!!



http://www.time.gov/





http://www.timezoneconverter.com/cgi-bin鈥?/a>What Area Codes/Prefixes in Indiana are in the Central time zone?
google text that question