Marketing & B2B data brokers
B2B marketing-data brokers sell consumer or business-contact data to advertisers, marketers, recruiters, and sales teams. They do not run consumer-facing lookup sites, but the data they license powers direct mail, programmatic advertising, identity resolution, and sales-prospecting tools. Opt-out usually exists but operates through a B2B suppression list rather than a public record-removal flow.
5 brokers in this category

AtData
atdata.com
Data privacy risk
LimitedExtensive
Redirects to enformion.comEndato
endato.com
Data privacy risk
LimitedExtensive

Enformion
enformion.com
Data privacy risk
LimitedExtensive
Redirects to atdata.comTowerData
towerdata.com
Data privacy risk
LimitedExtensive

Tracers
tracers.com
Data privacy risk
LimitedExtensive