Cumberland, IN — rate center

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

State
Indiana
Area codes
317, 463
Active prefixes
11
Carriers
8
Pooled prefixes
9
LATA
336
Metro area
Indianapolis-Carmel-Greenwood, IN MSA

Phone numbers "from Cumberland" are, precisely speaking, numbers whose prefixes are anchored to the Cumberland rate center of Indiana, under 317, 463.

11 central-office prefixes are currently anchored to this rate center across 8 carriers. 9 prefixes participate in thousands-block pooling, so blocks of 1,000 numbers are shared between carriers.

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

Multiple area codes over one rate center (317/463) is the overlay pattern: same geography, different first three digits.

Treat this data as geography of the number, not of the caller: porting, VoIP and caller-ID spoofing all detach the two. When a call matters, hang up and call back through an official number.

Prefixes anchored to Cumberland

Prefixes anchored to the Cumberland rate center
PrefixCode holderPooled
317-434 LEVEL 3 COMMUNICATIONS, LLC - IN Yes
317-622 TELEPORT COMMUNICATIONS AMERICA, LLC - IN Yes
317-866 HANCOCK COMMUNICATIONS, INC. - IN No
317-891 INDIANA BELL TEL CO INC Yes
317-894 INDIANA BELL TEL CO INC No
317-934 BANDWIDTH.COM CLEC, LLC - IN Yes
317-947 PAETEC ITEL, LLC Yes

FAQ

What area code is Cumberland, IN?

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

How many prefixes does Cumberland have?

11 active NXX prefixes are anchored to this rate center in NANPA records, held by 8 carriers.

Is a call from a Cumberland prefix really from Cumberland?

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