Area codes 317 and 463

317317 and 463317 & 463area code 317317 area code317, 463
Area codes 317 and 463 are North American Numbering Plan area codes for central Indiana.wikipedia
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North American Numbering Plan

Area codeArea codesArea code(s)
Area codes 317 and 463 are North American Numbering Plan area codes for central Indiana.
For example, Indiana area code 317 was split to provide a larger number pool in the Indiana suburbs of Chicago (area code 219).

Indianapolis

Indianapolis, IndianaIndianapolis, INIndiana (Indianapolis)
They serve Indianapolis and most of its suburbs in Marion, Boone, Hancock, Hamilton, Hendricks, Johnson, Madison, Morgan, and Shelby counties.

List of original NANP area codes

original area codesoriginal 86 area codesoriginal numbering plan areas
317 was one of the original area codes introduced in 1947.

Area code 765

765
No changes were made to 317 until February 1, 1997, when most of the old 317 territory outside of the Indianapolis area switched to 765, making 317 largely coextensive with the core of the Indianapolis metropolitan area.
It currently serves a horseshoe-shaped region of 20 counties surrounding the Indianapolis area, which is served by area code 317.

List of North American Numbering Plan area codes

List of North American area codesArea CodesNPA
*List of NANP area codes

Indianapolis metropolitan area

IndianapolisMetropolitan Statistical AreaIndianapolis area
No changes were made to 317 until February 1, 1997, when most of the old 317 territory outside of the Indianapolis area switched to 765, making 317 largely coextensive with the core of the Indianapolis metropolitan area.
The 317 area code covered all of northern and central Indiana until 1948, when the 219 area code was created.

Area code 219

219
In the first split of the area code system since its 1947 inception, the northern third of Indiana, including South Bend, Gary and Fort Wayne, received 219 the following year.
317 served the northern two-thirds of Indiana, while 812 served the southern third.

Telephone numbering plan

Area codeCalling codearea codes
Area codes 317 and 463 are North American Numbering Plan area codes for central Indiana.

Indiana

INState of IndianaInd.
Area codes 317 and 463 are North American Numbering Plan area codes for central Indiana.

Marion County, Indiana

Marion CountyMarion49 Marion
They serve Indianapolis and most of its suburbs in Marion, Boone, Hancock, Hamilton, Hendricks, Johnson, Madison, Morgan, and Shelby counties.

Boone County, Indiana

BooneBoone CountyBoone Counties
They serve Indianapolis and most of its suburbs in Marion, Boone, Hancock, Hamilton, Hendricks, Johnson, Madison, Morgan, and Shelby counties.

Hancock County, Indiana

Hancock CountyHancockIndiana
They serve Indianapolis and most of its suburbs in Marion, Boone, Hancock, Hamilton, Hendricks, Johnson, Madison, Morgan, and Shelby counties.

Hamilton County, Indiana

Hamilton CountyHamilton29 Hamilton
They serve Indianapolis and most of its suburbs in Marion, Boone, Hancock, Hamilton, Hendricks, Johnson, Madison, Morgan, and Shelby counties.

Hendricks County, Indiana

Hendricks CountyHendricksHenricks
They serve Indianapolis and most of its suburbs in Marion, Boone, Hancock, Hamilton, Hendricks, Johnson, Madison, Morgan, and Shelby counties.

Johnson County, Indiana

Johnson CountyJohnson41 Johnson
They serve Indianapolis and most of its suburbs in Marion, Boone, Hancock, Hamilton, Hendricks, Johnson, Madison, Morgan, and Shelby counties.

Madison County, Indiana

Madison CountyMadisonIndiana
They serve Indianapolis and most of its suburbs in Marion, Boone, Hancock, Hamilton, Hendricks, Johnson, Madison, Morgan, and Shelby counties.

Morgan County, Indiana

Morgan CountyMorganIndiana
They serve Indianapolis and most of its suburbs in Marion, Boone, Hancock, Hamilton, Hendricks, Johnson, Madison, Morgan, and Shelby counties.

Shelby County, Indiana

Shelby CountyShelbyIndiana
They serve Indianapolis and most of its suburbs in Marion, Boone, Hancock, Hamilton, Hendricks, Johnson, Madison, Morgan, and Shelby counties.

Overlay plan

overlayoverlaidoverlay area code
317 is the original area code, while 463 is an overlay covering the same area, making ten-digit dialing mandatory for all calls in the region.

Ten-digit dialing

10-digit dialingten-digit diallingten digits
317 is the original area code, while 463 is an overlay covering the same area, making ten-digit dialing mandatory for all calls in the region.

Area codes 812 and 930

812930812 & 930
It originally covered the northern two-thirds of Indiana, while area code 812 served southern Indiana.

South Bend, Indiana

South BendSouth Bend, INNotre Dame
In the first split of the area code system since its 1947 inception, the northern third of Indiana, including South Bend, Gary and Fort Wayne, received 219 the following year.

Gary, Indiana

GaryGary, INGary Public Library
In the first split of the area code system since its 1947 inception, the northern third of Indiana, including South Bend, Gary and Fort Wayne, received 219 the following year.

Fort Wayne, Indiana

Fort WayneFort Wayne, INFt. Wayne
In the first split of the area code system since its 1947 inception, the northern third of Indiana, including South Bend, Gary and Fort Wayne, received 219 the following year.

Permissive dialing

permissive dialling
On that date, a permissive dialing period began during which both seven- and ten-digit calls would be able to complete.