Prefix 317-734 — Indianapolis, IN

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

Area code
317
Prefix (NXX)
734
Rate center
Indianapolis
State
Indiana
Time zone
Eastern
Code holder
NEW CINGULAR WIRELESS PCS, LLC - IL
OCN
6534
Pooled
Yes (thousands-block pooling)
Assigned
2016-11-03
LATA
336

The 317-734 prefix belongs to area code 317 and is anchored to the Indianapolis rate center (IN). In NANP terms, the prefix — or NXX — determines the rate center a number is billed against.

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.

The assigned code holder is NEW CINGULAR WIRELESS PCS, LLC - IL, operating company number 6534, assigned November 3, 2016. This is a pooled prefix — expect numbers within it to be split across more than one carrier in 1,000-number blocks.

Caller ID showing 317-734 is not proof the call came from Indianapolis: spoofing and porting both detach numbers from their origin. To verify a caller, hang up and dial the organization's published number, and report suspicious calls to the FTC.

Neighboring prefixes

Prefixes adjacent to 317-734
PrefixRate centerCode holder
317-731 Indianapolis INDIANA BELL TEL CO INC
317-732 Zionsville TELEPORT COMMUNICATIONS AMERICA, LLC - IN
317-733 Zionsville INDIANA BELL TEL CO INC
317-735 Indianapolis INDIANA BELL TEL CO INC
317-736 Franklin BRIGHTSPEED OF INDIANA, LLC
317-737 Indianapolis METROPCS, INC.

FAQ

Where is 317-734 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 317-734 numbers?

NEW CINGULAR WIRELESS PCS, LLC - IL 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 317-734 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.