Prefix 317-499 — Indianapolis, IN

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

Area code
317
Prefix (NXX)
499
Rate center
Indianapolis
State
Indiana
Time zone
Eastern
Code holder
METROPCS, INC.
OCN
5562
Pooled
Yes (thousands-block pooling)
Assigned
2016-07-18
LATA
336

The 317-499 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 METROPCS, INC., operating company number 5562, assigned July 18, 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 317-499 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 317-499
PrefixRate centerCode holder
317-496 Indianapolis OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC
317-497 Greenwood LEVEL 3 COMMUNICATIONS, LLC - IN
317-498 Greenfield CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN
317-500 Indianapolis OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC
317-501 Indianapolis CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN
317-502 Indianapolis CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN

FAQ

Where is 317-499 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 317-499 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 317-499 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.