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

MORRO BAY prefixes in area code 805

NANPA records 7 assigned NXX blocks to rate center MORRO BAY in area code 805, 0.9% of the 786 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 PACIFIC BELL (3), ONVOY, LLC - CA (2), LEVEL 3 COMMUNICATIONS, LLC - CA (1). The earliest assignment on record here is 2023-06-22 and the most recent 2023-06-22. 6 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

7 assigned blocks – 0.9% of 805
4 holders of record
6 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
805-225 AT&T PACIFIC BELL – yes yes
805-254 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA – yes yes
805-600 Onvoy ONVOY, LLC - CA – yes yes
805-771 AT&T PACIFIC BELL – yes yes
805-772 AT&T PACIFIC BELL – no yes
805-776 Lumen LEVEL 3 TELECOM OF CALIFORNIA, LP - CA – yes yes
805-831 Onvoy ONVOY, LLC - CA 2023-06-22 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
PACIFIC BELL AT&T 3 42.9%
ONVOY, LLC - CA Onvoy 2 28.6%
LEVEL 3 COMMUNICATIONS, LLC - CA Lumen 1 14.3%
LEVEL 3 TELECOM OF CALIFORNIA, LP - CA Lumen 1 14.3%

Frequently asked

Which prefixes belong to MORRO BAY in area code 805?

7 blocks: 225, 254, 600, 771, 772, 776, 831. The table above gives the holder of each.

Which carriers have numbers in MORRO BAY?

PACIFIC BELL (3 blocks), ONVOY, LLC - CA (2 blocks), LEVEL 3 COMMUNICATIONS, LLC - CA (1 block), LEVEL 3 TELECOM OF CALIFORNIA, LP - 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 MORRO BAY 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 805

All 786 prefixes in 805