Area code 317 serves central Indiana, including Indianapolis, since 1947. It's overlaid by 463, mandating 10-digit dialing since 2016. Explore its history, telecom carriers (AT&T, Verizon), regulatory oversight by IURC, and evolution from its initial northern Indiana coverage. Understand its geographic reach and numbering plan details.
Frequently Asked Questions
What area code is Indianapolis, Indiana?
What cities are included in area code 317 in Indiana?
What is the overlay area code for 317 in Indiana?
When was area code 317 established in Indiana?
When did ten-digit dialing become mandatory for area code 317?
What area codes were split from 317 in Indiana?
Who regulates area code 317 in Indiana?
Which major cell phone carriers service the 317 area code in Indiana?
What types of phone services are available within Indiana's area code 317?
What is the North American Numbering Plan (NANP) and its connection to 317?
Where can I find additional information about area codes?
What area code is Indianapolis Indiana?
How to dial area code 317 from another area code?
What is area code 317 and its coverage area?
Why does Indianapolis have two area codes now?
When should I use 10-digit dialing for 317?
Can I still get a 317 area code number?
What counties are covered by Indiana area code 317?
