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

GREENFIELD prefixes in area code 317

NANPA records 14 assigned NXX blocks to rate center GREENFIELD in area code 317, 1.8% 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. 5 holders hold those blocks, the largest being CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN (7), INDIANA BELL TEL CO INC (3), HANCOCK COMMUNICATIONS, INC. - IN (2). The earliest assignment on record here is 2007-08-23 and the most recent 2022-12-07. 11 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 217, 413, 417, 463 – overlay codes cover the same geography, so a rate center is served by all of them.

14 assigned blocks – 1.8% of 317
5 holders of record
11 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
317-314 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 2022-12-07 yes yes
317-315 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 2011-10-10 yes yes
317-318 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - IN – yes yes
317-325 HANCOCK COMMUNICATIONS, INC. - IN – yes yes
317-448 Lumen LEVEL 3 COMMUNICATIONS, LLC - IN – yes yes
317-462 AT&T INDIANA BELL TEL CO INC – no yes
317-467 AT&T INDIANA BELL TEL CO INC – yes yes
317-468 AT&T INDIANA BELL TEL CO INC – yes yes
317-477 HANCOCK COMMUNICATIONS, INC. - IN – no yes
317-498 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN – no yes
317-526 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 2017-03-20 yes yes
317-586 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 2007-08-23 yes yes
317-649 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 2013-09-09 yes yes
317-967 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 2014-09-12 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
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN Verizon 7 50%
INDIANA BELL TEL CO INC AT&T 3 21.4%
HANCOCK COMMUNICATIONS, INC. - IN – 2 14.3%
TELEPORT COMMUNICATIONS AMERICA, LLC - IN AT&T 1 7.1%
LEVEL 3 COMMUNICATIONS, LLC - IN Lumen 1 7.1%

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 GREENFIELD in area code 317?

14 blocks: 314, 315, 318, 325, 448, 462, 467, 468, 477, 498, 526, 586 and 2 more, all listed in the table above.

Which carriers have numbers in GREENFIELD?

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN (7 blocks), INDIANA BELL TEL CO INC (3 blocks), HANCOCK COMMUNICATIONS, INC. - IN (2 blocks), TELEPORT COMMUNICATIONS AMERICA, LLC - IN (1 block), LEVEL 3 COMMUNICATIONS, LLC - IN (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is GREENFIELD 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