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

GRAMBLING prefixes in area code 318

NANPA records 5 assigned NXX blocks to rate center GRAMBLING in area code 318, 0.7% of the 765 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 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL (2), PAETEC ITEL, LLC (1), LEVEL 3 COMMUNICATIONS, LLC - LA (1). The earliest assignment on record here is 2003-01-30 and the most recent 2004-10-20. 4 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

5 assigned blocks – 0.7% of 318
4 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
318-247 AT&T BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL – yes yes
318-274 AT&T BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL – yes yes
318-468 Windstream PAETEC ITEL, LLC 2003-01-30 no yes
318-596 Lumen LEVEL 3 COMMUNICATIONS, LLC - LA 2004-10-20 yes yes
318-809 Onvoy ONVOY, LLC - LA – 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
BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL AT&T 2 40%
PAETEC ITEL, LLC Windstream 1 20%
LEVEL 3 COMMUNICATIONS, LLC - LA Lumen 1 20%
ONVOY, LLC - LA Onvoy 1 20%

Frequently asked

Which prefixes belong to GRAMBLING in area code 318?

5 blocks: 247, 274, 468, 596, 809. The table above gives the holder of each.

Which carriers have numbers in GRAMBLING?

BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL (2 blocks), PAETEC ITEL, LLC (1 block), LEVEL 3 COMMUNICATIONS, LLC - LA (1 block), ONVOY, LLC - LA (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is GRAMBLING 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 318

All 765 prefixes in 318