Prefix 317-389 — Indianapolis, IN

NANPA CO code assignment, current as of July 28, 2026.

Area code
317
Prefix (NXX)
389
Rate center
Indianapolis
State
Indiana
Time zone
Eastern
Code holder
OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC
OCN
2964
Pooled
Yes (thousands-block pooling)
Assigned
2015-07-21
LATA
336

A phone number starting 317-389 was issued in the Indianapolis rate center of IN — part of area code 317.

The assigned code holder is OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC, operating company number 2964, assigned July 21, 2015. This is a pooled prefix — expect numbers within it to be split across more than one carrier in 1,000-number blocks.

A scammer can display 317-389 without ever touching IN. When in doubt, end the call and reach the company or agency through its official website; unwanted robocalls belong in the FTC's fraud report queue.

Indianapolis is part of the Indianapolis-Carmel-Greenwood, IN Metropolitan Statistical Area. For routing purposes it sits in LATA 336. Numbers here keep Eastern time.

Neighboring prefixes

Prefixes adjacent to 317-389
PrefixRate centerCode holder
317-386 Danville LEVEL 3 COMMUNICATIONS, LLC - IN
317-387 Indianapolis INDIANA BELL TEL CO INC
317-388 Indianapolis INDIANA BELL TEL CO INC
317-390 Indianapolis INDIANA BELL TEL CO INC
317-391 Indianapolis CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN
317-392 Shelbyville INDIANA BELL TEL CO INC

FAQ

Where is 317-389 located?

The prefix is assigned to the Indianapolis rate center in IN, area code 317. It is part of the Indianapolis-Carmel-Greenwood, IN Metropolitan Statistical Area.

Which company owns 317-389 numbers?

OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC holds the code, but the prefix is pooled — individual thousands-blocks can be assigned to other carriers, and numbers may be ported to any provider.

Is a call from 317-389 safe to answer?

The prefix itself says nothing about the caller. Legitimate Indianapolis businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.