Prefix 317-688 — Carmel, IN
The 317-688 prefix belongs to area code 317 and is anchored to the Carmel rate center (IN). In NANP terms, the prefix — or NXX — determines the rate center a number is billed against.
Carmel is part of the Indianapolis-Carmel-Greenwood, IN Metropolitan Statistical Area. For routing purposes it sits in LATA 336. Numbers here keep Eastern time.
NANPA's central-office code records list LEVEL 3 COMMUNICATIONS, LLC - IN (OCN 4803) as the code holder, assigned May 27, 2005. Because 317-688 participates in thousands-block pooling, individual 1,000-number blocks may belong to other carriers than the code holder.
Caller ID showing 317-688 is not proof the call came from Carmel: 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
| Prefix | Rate center | Code holder |
|---|---|---|
| 317-685 | Indianapolis | INDIANA BELL TEL CO INC |
| 317-686 | Indianapolis | INDIANA BELL TEL CO INC |
| 317-687 | Indianapolis | INDIANA BELL TEL CO INC |
| 317-689 | Carmel | LEVEL 3 TELECOM OF INDIANA, LP - IN |
| 317-690 | Indianapolis | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN |
| 317-691 | Indianapolis | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN |
FAQ
Where is 317-688 located?
The prefix is assigned to the Carmel rate center in IN, area code 317. It is part of the Indianapolis-Carmel-Greenwood, IN Metropolitan Statistical Area.
Which company owns 317-688 numbers?
LEVEL 3 COMMUNICATIONS, LLC - IN 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 317-688 safe to answer?
The prefix itself says nothing about the caller. Legitimate Carmel businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.