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

GUADALUPE prefixes in area code 820

NANPA records 3 assigned NXX blocks to rate center GUADALUPE in area code 820, 3.1% of the 98 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. 3 holders hold those blocks, the largest being T-MOBILE USA, INC. (1), ONVOY, LLC - CA (1), FRACTEL, LLC (1). The earliest assignment on record here is 2019-01-15 and the most recent 2024-01-11. 3 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 805 – overlay codes cover the same geography, so a rate center is served by all of them.

3 assigned blocks – 3.1% of 820
3 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
820-225 T-Mobile T-MOBILE USA, INC. 2024-01-11 yes yes
820-300 Onvoy ONVOY, LLC - CA 2019-01-15 yes yes
820-336 FRACTEL, LLC 2021-03-12 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
T-MOBILE USA, INC. T-Mobile 1 33.3%
ONVOY, LLC - CA Onvoy 1 33.3%
FRACTEL, LLC – 1 33.3%

Same rate center in other codes

Overlay codes cover the same geography, so one rate center is served by all of them.

Frequently asked

Which prefixes belong to GUADALUPE in area code 820?

3 blocks: 225, 300, 336. The table above gives the holder of each.

Which carriers have numbers in GUADALUPE?

T-MOBILE USA, INC. (1 block), ONVOY, LLC - CA (1 block), FRACTEL, LLC (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is GUADALUPE 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 820

All 98 prefixes in 820