Prefix 317-212 — Indianapolis, IN

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

Area code
317
Prefix (NXX)
212
Rate center
Indianapolis
State
Indiana
Time zone
Eastern
Code holder
INDIANA BELL TEL CO INC
OCN
9325
Pooled
Yes (thousands-block pooling)
Assigned
2010-04-29
LATA
336

317-212 identifies a block of numbers in Indianapolis, IN, within the 317 area code. Every US prefix is tied to exactly one rate center; this one is Indianapolis.

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

Treat the on-screen number as a hint, not evidence — 317-212 can be spoofed like any US prefix. If a call feels off, verify through an official callback number and file a complaint with the FCC or FTC.

NANPA's central-office code records list INDIANA BELL TEL CO INC (OCN 9325) as the code holder, assigned April 29, 2010. Because 317-212 participates in thousands-block pooling, individual 1,000-number blocks may belong to other carriers than the code holder.

Neighboring prefixes

Prefixes adjacent to 317-212
PrefixRate centerCode holder
317-208 Carmel INDIANA BELL TEL CO INC
317-209 Indianapolis INDIANA BELL TEL CO INC
317-210 Mooresville TELEPORT COMMUNICATIONS AMERICA, LLC - IN
317-213 Indianapolis OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC
317-214 Noblesville PAETEC ITEL, LLC
317-215 Greenwood PAETEC ITEL, LLC

FAQ

Where is 317-212 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 317-212 numbers?

INDIANA BELL TEL CO 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 317-212 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.