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

GREENBRIER prefixes in area code 615

NANPA records 4 assigned NXX blocks to rate center GREENBRIER in area code 615, 0.5% of the 781 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 ONVOY, LLC - TN (1), LEVEL 3 COMMUNICATIONS, LLC - TN (1), BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL (1). The earliest assignment on record here is 2006-06-01 and the most recent 2016-03-17. 3 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 501, 629 – overlay codes cover the same geography, so a rate center is served by all of them.

4 assigned blocks – 0.5% of 615
4 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
615-205 Onvoy ONVOY, LLC - TN 2016-03-17 yes yes
615-358 Lumen LEVEL 3 COMMUNICATIONS, LLC - TN – yes yes
615-643 AT&T BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL – no yes
615-863 Comcast COMCAST IP PHONE, LLC 2006-06-01 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
ONVOY, LLC - TN Onvoy 1 25%
LEVEL 3 COMMUNICATIONS, LLC - TN Lumen 1 25%
BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL AT&T 1 25%
COMCAST IP PHONE, LLC Comcast 1 25%

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 GREENBRIER in area code 615?

4 blocks: 205, 358, 643, 863. The table above gives the holder of each.

Which carriers have numbers in GREENBRIER?

ONVOY, LLC - TN (1 block), LEVEL 3 COMMUNICATIONS, LLC - TN (1 block), BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL (1 block), COMCAST IP PHONE, 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 GREENBRIER 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 615

All 781 prefixes in 615