The 317 telephone area code serving Indianapolis and most of its suburbs is low on available numbers and is projected to run out in 2017.
A new area code will need to be added as a result.
- The Indiana Utility Regulatory Commission (IURC) will decide how to add the new code.
- The telecommunications industry and the Indiana Office of Utility Consumer Counselor (OUCC) are both recommending use of the "all-services overlay" method to add the new code.
- The OUCC issued a September 24, 2014 news release to invite public comments and to publicize the five public field hearings held in the fall of 2014. The hearings were held in Indianapolis, Carmel, Franklin, Danville, and Greenfield.
- A decision in the case (Cause No. 44513) is expected later this year.
All new area codes introduced in the United States since 2008 have used the overlay method, including the new 930 area code in southern, south-central and western Indiana. 930 will be added to the 812 area in March.
If the overlay proposal for the 317 area is approved:
- All consumers with 317 numbers will keep them, with no changes.
- On a future date (most likely in 2016), numbers for new telephone customers will be assigned with the new area code.
- All customers will dial ten digits for local calls (area code + number), though local calling areas will not change. Calls that are currently local will remain local.
- Toll calls will still use eleven digits (1 + area code + number).
- A transition period (likely to last six months) will allow consumers to adjust to 10-digit dialing and make any needed changes.
- Businesses, not-for-profit organizations, government agencies and other customers will not need to incur costs for reprinting signage, stationery, advertising, or business cards because of the area code change.
For more information on the pending case:
For more information, in general:
This page will be updated based on future developments.