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

HALLS prefixes in area code 731

NANPA records 4 assigned NXX blocks to rate center HALLS in area code 731, 1.0% of the 395 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. 4 holders hold those blocks, the largest being TELEPORT COMMUNICATIONS AMERICA, LLC - TN (1), ONVOY, LLC - TN (1), BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL (1). The earliest assignment on record here is 2004-10-26 and the most recent 2021-06-22. 3 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

4 assigned blocks – 1% of 731
4 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
731-224 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TN 2015-02-25 yes yes
731-710 Onvoy ONVOY, LLC - TN 2021-06-22 yes yes
731-836 AT&T BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL – no yes
731-903 Lumen LEVEL 3 COMMUNICATIONS, LLC - TN 2004-10-26 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
TELEPORT COMMUNICATIONS AMERICA, LLC - TN AT&T 1 25%
ONVOY, LLC - TN Onvoy 1 25%
BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL AT&T 1 25%
LEVEL 3 COMMUNICATIONS, LLC - TN Lumen 1 25%

Frequently asked

Which prefixes belong to HALLS in area code 731?

4 blocks: 224, 710, 836, 903. The table above gives the holder of each.

Which carriers have numbers in HALLS?

TELEPORT COMMUNICATIONS AMERICA, LLC - TN (1 block), ONVOY, LLC - TN (1 block), BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL (1 block), LEVEL 3 COMMUNICATIONS, LLC - TN (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is HALLS 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 731

All 395 prefixes in 731