NumberingData
Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records

CUMBERLAND prefixes in area code 317

NANPA records 7 assigned NXX blocks to rate center CUMBERLAND in area code 317, 0.9% of the 786 blocks assigned in the code. A rate center is the billing geography a block is allocated to – NANPA truncates the name to ten characters, so read it as a NANPA label rather than a town. 6 holders hold those blocks, the largest being INDIANA BELL TEL CO INC (2), LEVEL 3 COMMUNICATIONS, LLC - IN (1), TELEPORT COMMUNICATIONS AMERICA, LLC - IN (1). The earliest assignment on record here is 2001-11-20 and the most recent 2015-04-23. 5 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots. The same rate center name also appears in area codes 207, 227, 240, 301 – overlay codes cover the same geography, so a rate center is served by all of them.

7 assigned blocks – 0.9% of 317
6 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
317-434 Lumen LEVEL 3 COMMUNICATIONS, LLC - IN 2011-11-14 yes yes
317-622 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - IN 2001-11-20 yes yes
317-866 HANCOCK COMMUNICATIONS, INC. - IN – no yes
317-891 AT&T INDIANA BELL TEL CO INC – yes yes
317-894 AT&T INDIANA BELL TEL CO INC – no yes
317-934 Bandwidth BANDWIDTH.COM CLEC, LLC - IN 2015-04-23 yes yes
317-947 Windstream PAETEC ITEL, LLC – yes yes

The holder is who received the block from the numbering administrator. It is not necessarily the carrier serving a given number: numbers move with their owners, and a pooled block is shared.

Who holds the blocks

HolderBrandBlocksShare here
INDIANA BELL TEL CO INC AT&T 2 28.6%
LEVEL 3 COMMUNICATIONS, LLC - IN Lumen 1 14.3%
TELEPORT COMMUNICATIONS AMERICA, LLC - IN AT&T 1 14.3%
HANCOCK COMMUNICATIONS, INC. - IN – 1 14.3%
BANDWIDTH.COM CLEC, LLC - IN Bandwidth 1 14.3%
PAETEC ITEL, LLC Windstream 1 14.3%

Same rate center in other codes

Overlay codes cover the same geography, so one rate center is served by all of them.

Frequently asked

Which prefixes belong to CUMBERLAND in area code 317?

7 blocks: 434, 622, 866, 891, 894, 934, 947. The table above gives the holder of each.

Which carriers have numbers in CUMBERLAND?

INDIANA BELL TEL CO INC (2 blocks), LEVEL 3 COMMUNICATIONS, LLC - IN (1 block), TELEPORT COMMUNICATIONS AMERICA, LLC - IN (1 block), HANCOCK COMMUNICATIONS, INC. - IN (1 block), BANDWIDTH.COM CLEC, LLC - IN (1 block), PAETEC ITEL, LLC (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is CUMBERLAND a city?

It is a rate center – the unit NANPA allocates number blocks to. Its name is abbreviated to ten characters and is not necessarily a settlement: we print it as recorded rather than guess at the full name.

Other rate centers in 317

All 786 prefixes in 317