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How does one go about removing a phone number off of these sales data aggregators?

I don't think I've ever explicitly given these phone numbers to tools like this (e.g. signing up to Datadog with a phone number), so this seems like sensitive PII that must have been leaked and scraped in some shady source that these sales "data-enrichment" tools happily take.

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There are probably way too many data aggregators out there to keep track of completely, but theres definitely a few github repos I've seen that keep lists of both the companies and their opt-out procedures (some with automation).

This is one of the better ones I've seen: https://github.com/yaelwrites/Big-Ass-Data-Broker-Opt-Out-Li...

From a purely B2B perspective, the most egregious offender IMHO is Zoominfo largely because of the wide adoption in sales orgs. You can opt-out here: https://www.zoominfo.com/privacy-center/update/remove

Change your number and only leak to IRL contacts.

Optionally have your work provide you a work phone and only give that out for work activities.

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