Carmel, IN — rate center

NANPA rate center & CO code data, current as of July 28, 2026.

Carmel is a telephone rate center in Indiana served by area codes 317, 463. A rate center is the locality the phone industry uses to anchor numbers for billing; every prefix listed below is registered here.

NANPA records show 54 active prefixes here, held by 16 different carriers. Pooling applies to 36 of them — individual thousands-blocks may belong to different companies.

The rate center belongs to the Indianapolis-Carmel-Greenwood, IN Metropolitan Statistical Area. Routing-wise it sits in LATA 336.

Because 317, 463 all serve this territory, two Carmel numbers can look completely different while being neighbors — check the prefix, not just the area code.

As always with US numbering: a prefix anchored to Carmel tells you where the block was issued. The person calling may have ported the number, moved away, or be spoofing it entirely — verify callers through independently found contact details.

Prefixes anchored to Carmel

FAQ

What area code is Carmel, IN?

Carmel is served by 2 area codes — 317, 463 — which overlay the same territory.

How many prefixes does Carmel have?

54 active NXX prefixes are anchored to this rate center in NANPA records, held by 16 carriers.

Is a call from a Carmel prefix really from Carmel?

Not necessarily. The prefix marks where the number block was issued; porting, VoIP and spoofing all detach calls from that geography.