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

JAMESTOWN prefixes in area code 209

NANPA records 7 assigned NXX blocks to rate center JAMESTOWN in area code 209, 0.9% 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. 6 holders hold those blocks, the largest being BANDWIDTH.COM CLEC, LLC - CA (2), T-MOBILE USA, INC. (1), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (1). The earliest assignment on record here is 2015-04-10 and the most recent 2023-07-18. 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 codes 270, 326, 350, 364 – overlay codes cover the same geography, so a rate center is served by all of them.

7 assigned blocks – 0.9% of 209
6 holders of record
7 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
209-431 Bandwidth BANDWIDTH.COM CLEC, LLC - CA 2015-04-10 yes yes
209-517 T-Mobile T-MOBILE USA, INC. 2023-07-18 yes yes
209-630 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 2019-07-01 yes yes
209-782 Bandwidth BANDWIDTH.COM CLEC, LLC - CA – yes yes
209-801 Telnyx TELNYX LLC 2021-04-27 yes yes
209-916 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA – yes yes
209-984 AT&T PACIFIC BELL – 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 2 28.6%
T-MOBILE USA, INC. T-Mobile 1 14.3%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA Verizon 1 14.3%
TELNYX LLC Telnyx 1 14.3%
LEVEL 3 COMMUNICATIONS, LLC - CA Lumen 1 14.3%
PACIFIC BELL AT&T 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 JAMESTOWN in area code 209?

7 blocks: 431, 517, 630, 782, 801, 916, 984. The table above gives the holder of each.

Which carriers have numbers in JAMESTOWN?

BANDWIDTH.COM CLEC, LLC - CA (2 blocks), T-MOBILE USA, INC. (1 block), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (1 block), TELNYX LLC (1 block), LEVEL 3 COMMUNICATIONS, LLC - CA (1 block), PACIFIC BELL (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is JAMESTOWN 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