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

LOCKEFORD prefixes in area code 209

NANPA records 4 assigned NXX blocks to rate center LOCKEFORD in area code 209, 0.5% 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. 3 holders hold those blocks, the largest being ONVOY, LLC - CA (2), PACIFIC BELL (1), BANDWIDTH.COM CLEC, LLC - CA (1). 4 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

4 assigned blocks – 0.5% of 209
3 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
209-727 AT&T PACIFIC BELL – yes yes
209-787 Onvoy ONVOY, LLC - CA – yes yes
209-797 Onvoy ONVOY, LLC - CA – yes yes
209-867 Bandwidth BANDWIDTH.COM CLEC, LLC - CA – 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
ONVOY, LLC - CA Onvoy 2 50%
PACIFIC BELL AT&T 1 25%
BANDWIDTH.COM CLEC, LLC - CA Bandwidth 1 25%

Frequently asked

Which prefixes belong to LOCKEFORD in area code 209?

4 blocks: 727, 787, 797, 867. The table above gives the holder of each.

Which carriers have numbers in LOCKEFORD?

ONVOY, LLC - CA (2 blocks), PACIFIC BELL (1 block), BANDWIDTH.COM CLEC, LLC - 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 LOCKEFORD 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