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

MARIPOSA prefixes in area code 209

NANPA records 3 assigned NXX blocks to rate center MARIPOSA in area code 209, 0.4% 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. 2 holders hold those blocks, the largest being SIERRA TEL. CO., INC. (2), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (1). 1 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 350 – overlay codes cover the same geography, so a rate center is served by all of them.

3 assigned blocks – 0.4% of 209
2 holders of record
1 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
209-347 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – yes yes
209-742 SIERRA TEL. CO., INC. – no yes
209-966 SIERRA TEL. CO., INC. – no 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
SIERRA TEL. CO., INC. – 2 66.7%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA Verizon 1 33.3%

Frequently asked

Which prefixes belong to MARIPOSA in area code 209?

3 blocks: 347, 742, 966. The table above gives the holder of each.

Which carriers have numbers in MARIPOSA?

SIERRA TEL. CO., INC. (2 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - 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 MARIPOSA 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