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

GUALALA prefixes in area code 707

NANPA records 4 assigned NXX blocks to rate center GUALALA in area code 707, 0.5% of the 785 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 IP HORIZON LLC (1), PACIFIC BELL (1), LEVEL 3 COMMUNICATIONS, LLC - CA (1). 4 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 369 – overlay codes cover the same geography, so a rate center is served by all of them.

4 assigned blocks – 0.5% of 707
4 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
707-412 IP HORIZON LLC – yes yes
707-884 AT&T PACIFIC BELL – yes yes
707-885 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA – yes yes
707-896 Onvoy ONVOY, LLC - CA – 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
IP HORIZON LLC – 1 25%
PACIFIC BELL AT&T 1 25%
LEVEL 3 COMMUNICATIONS, LLC - CA Lumen 1 25%
ONVOY, LLC - CA Onvoy 1 25%

Frequently asked

Which prefixes belong to GUALALA in area code 707?

4 blocks: 412, 884, 885, 896. The table above gives the holder of each.

Which carriers have numbers in GUALALA?

IP HORIZON LLC (1 block), PACIFIC BELL (1 block), LEVEL 3 COMMUNICATIONS, LLC - CA (1 block), ONVOY, LLC - CA (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is GUALALA 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 707

All 785 prefixes in 707