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

SAN MARTIN prefixes in area code 669

NANPA records 7 assigned NXX blocks to rate center SAN MARTIN in area code 669, 2.9% of the 238 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 BANDWIDTH.COM CLEC, LLC - CA (4), FRACTEL, LLC (2), T-MOBILE USA, INC. (1). The earliest assignment on record here is 2014-02-28 and the most recent 2024-01-10. 7 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 408 – overlay codes cover the same geography, so a rate center is served by all of them.

7 assigned blocks – 2.9% of 669
3 holders of record
7 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
669-209 Bandwidth BANDWIDTH.COM CLEC, LLC - CA 2016-08-29 yes yes
669-228 Bandwidth BANDWIDTH.COM CLEC, LLC - CA 2014-02-28 yes yes
669-257 Bandwidth BANDWIDTH.COM CLEC, LLC - CA 2014-12-18 yes yes
669-280 Bandwidth BANDWIDTH.COM CLEC, LLC - CA 2019-02-08 yes yes
669-339 T-Mobile T-MOBILE USA, INC. 2024-01-10 yes yes
669-399 FRACTEL, LLC 2020-12-04 yes yes
669-587 FRACTEL, LLC 2021-07-16 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
BANDWIDTH.COM CLEC, LLC - CA Bandwidth 4 57.1%
FRACTEL, LLC – 2 28.6%
T-MOBILE USA, INC. T-Mobile 1 14.3%

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 SAN MARTIN in area code 669?

7 blocks: 209, 228, 257, 280, 339, 399, 587. The table above gives the holder of each.

Which carriers have numbers in SAN MARTIN?

BANDWIDTH.COM CLEC, LLC - CA (4 blocks), FRACTEL, LLC (2 blocks), T-MOBILE USA, INC. (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is SAN MARTIN 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 669

All 238 prefixes in 669