Prefix 317-737 — Indianapolis, IN

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

Area code
317
Prefix (NXX)
737
Rate center
Indianapolis
State
Indiana
Time zone
Eastern
Code holder
METROPCS, INC.
OCN
5562
Pooled
Yes (thousands-block pooling)
Assigned
2014-02-18
LATA
336

Numbers in the 317-737 prefix are registered to the Indianapolis rate center in IN, inside area code 317. The prefix is the second block of a ten-digit US number (317-737-XXXX) and pins the number to a billing locality.

The assigned code holder is METROPCS, INC., operating company number 5562, assigned February 18, 2014. This is a pooled prefix — expect numbers within it to be split across more than one carrier in 1,000-number blocks.

The rate center lies in the Indianapolis-Carmel-Greenwood, IN Metropolitan Statistical Area. The serving LATA is 336. Local time follows the Eastern zone.

Spoofing means this prefix on your screen doesn't guarantee a Indianapolis caller. Verify independently before trusting a request for money or data.

Neighboring prefixes

Prefixes adjacent to 317-737
PrefixRate centerCode holder
317-734 Indianapolis NEW CINGULAR WIRELESS PCS, LLC - IL
317-735 Indianapolis INDIANA BELL TEL CO INC
317-736 Franklin BRIGHTSPEED OF INDIANA, LLC
317-738 Franklin BRIGHTSPEED OF INDIANA, LLC
317-739 Franklin CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN
317-740 Carmel OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC

FAQ

Where is 317-737 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 317-737 numbers?

METROPCS, INC. 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 317-737 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.