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

COULTERVL prefixes in area code 209

NANPA records 5 assigned NXX blocks to rate center COULTERVL in area code 209, 0.6% of the 784 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 LEVEL 3 COMMUNICATIONS, LLC - CA (1), AT&T ENTERPRISES, LLC (1), EXIANT COMMUNICATIONS LLC (1). The earliest assignment on record here is 2011-12-23 and the most recent 2011-12-23. 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 code 618 – overlay codes cover the same geography, so a rate center is served by all of them.

5 assigned blocks – 0.6% of 209
5 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
209-266 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA – yes yes
209-317 AT&T AT&T ENTERPRISES, LLC 2011-12-23 yes yes
209-434 EXIANT COMMUNICATIONS LLC – yes yes
209-682 SKYE TELECOM LLC DBA SKYETEL – yes yes
209-878 AT&T PACIFIC BELL – 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
LEVEL 3 COMMUNICATIONS, LLC - CA Lumen 1 20%
AT&T ENTERPRISES, LLC AT&T 1 20%
EXIANT COMMUNICATIONS LLC – 1 20%
SKYE TELECOM LLC DBA SKYETEL – 1 20%
PACIFIC BELL AT&T 1 20%

Frequently asked

Which prefixes belong to COULTERVL in area code 209?

5 blocks: 266, 317, 434, 682, 878. The table above gives the holder of each.

Which carriers have numbers in COULTERVL?

LEVEL 3 COMMUNICATIONS, LLC - CA (1 block), AT&T ENTERPRISES, LLC (1 block), EXIANT COMMUNICATIONS LLC (1 block), SKYE TELECOM LLC DBA SKYETEL (1 block), PACIFIC BELL (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is COULTERVL 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 209

All 784 prefixes in 209