Credit reporting agencies (CRAs)
The Big 3 US credit bureaus are partially FCRA-regulated (their credit-reporting arms) but also run marketing-data products, which the companies sell separately from their credit reports: Experian Marketing Services, Equifax's IXI, and TransUnion TruAudience and Neustar. (Equifax's The Work Number is a separate employment-verification database, which its own FAQ says is regulated under the FCRA.) All four nationwide CRAs (the Big 3 plus Innovis) jointly operate OptOutPrescreen.com for prescreened credit and insurance offers.
6 brokers in this category

CoreLogic
cotality.com
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Equifax
equifax.com
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Experian
experian.com
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LexisNexis
lexisnexis.com
Paid plans file the opt-out for you
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The Work Number
theworknumber.com
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TransUnion
transunion.com
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