Data brokers starting with M

35 registered company names, from California's data broker registry and Oregon's opt-out report. Checked October 14, 2026.

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Each Privacy page link opens that company's own site in a new tab.

• M&R Strategic Services, Inc.Also known as M+Rmrss.com. In California's registry and Oregon's opt-out reportContact email (from the registry): privacy@mrss.com
• M1 Data & Analytics, LLCm1-data.com. In California's registryPrivacy page Contact email (from the registry): service@m1-data.com
• Madhive, Inc.madhive.com. In California's registryPrivacy page Contact email (from the registry): privacy@madhive.com
• Magnite Incmagnite.com. In California's registry and Oregon's opt-out reportPrivacy page Contact email (from the registry): privacy@magnite.com
• Malvern Media Inc.malvernmedia.com. In California's registryPrivacy page Contact email (from the registry): info@malvernmedia.com
• Marketing Architects, Inc.marketingarchitects.com. In California's registryPrivacy page Contact email (from the registry): privacy@markarch.com
• MarketOps LLCmarketops.com. In California's registryPrivacy page Contact email (from the registry): privacy@marketops.com
• MarketShare Partners, LLCtransunion.com. In California's registry
• Marriott International, Inc.marriott.com. In California's registryPrivacy page Contact email (from the registry): privacy@marriott.com
• Matchbook Data, LLCmatchbookdata.com. In California's registry and Oregon's opt-out reportPrivacy page Contact email (from the registry): privacy@matchbookdata.com
• MaxMind, Inc.maxmind.com. In California's registry and Oregon's opt-out reportPrivacy page Contact email (from the registry): privacy@maxmind.com
• MEDIA RESOURCE GROUP LLCmrginc.com. In Oregon's opt-out reportPrivacy page Contact email (from the registry): info@mrginc.com
• Media.net Advertising FZ, LLCmedia.net. In California's registryPrivacy page Contact email (from the registry): privacy@media.net
• MediaWallah Incmediawallah.com. In California's registry and Oregon's opt-out reportContact email (from the registry): privacy@mediawallah.com
• MedPro Systems, LLCmedprosystems.com. In California's registry and Oregon's opt-out reportPrivacy page Contact email (from the registry): privacy@medprosystems.com
• Melissa Data CorporationAlso known as Melissamelissa.com. In California's registryPrivacy page Contact email (from the registry): compliance@melissa.com
• MELISSA DATA CORPORATOINAlso known as Melissamelissa.com. In Oregon's opt-out reportPrivacy page
• Meltwater News US, Inc.meltwater.com. In California's registryPrivacy page Contact email (from the registry): privacy@meltwater.com
• Merkle Inc.merkle.com. In California's registry and Oregon's opt-out reportPrivacy page
• Message Digital LLCmessagedigital.com. In California's registry and Oregon's opt-out reportPrivacy page Contact email (from the registry): privacy@messagedigital.com
• MH Sub I, LLCinternetbrands.com. In California's registryContact email (from the registry): privacy@internetbrands.com
• Milestone Marketing Solutionsmilestonemarketingsolutions.com. In California's registry and Oregon's opt-out reportPrivacy page Contact email (from the registry): mmsprivacy@milestonemarketingsolutions.com
• Minerva BI IncAlso known as Minervaminerva.io. In California's registry and Oregon's opt-out reportPrivacy page Contact email (from the registry): privacy@minerva.io
• Mississippi Tornado Alley, LLCAlso known as CyberBackgroundChecks.com; AdvancedBackgroundChecks.com; FastBackgroundCheck.com; PeopleSearchNow.com; Phonebooks.com; SearchPeopleFree.com; SmartBackgroundChecfastpeoplesearch.com. In California's registry and Oregon's opt-out reportPrivacy page Contact email (from the registry): privacy@mtalley.zendesk.com Our FastPeopleSearch opt-out guide
• Mobile Technology CorporationAlso known as OnSpot Dataonspotdata.com. In California's registry and Oregon's opt-out reportPrivacy page Contact email (from the registry): optout@onspotdata.com
• MobileFuse LLCmobilefuse.com. In California's registry and Oregon's opt-out reportContact email (from the registry): compliance@mobilefuse.com
• Mobilewalla, Inc.mobilewalla.com. In California's registry and Oregon's opt-out reportPrivacy page Contact email (from the registry): privacy@mobilewalla.com
• ModFx Labs Pvt LtdAlso known as ModFx Labsmodfxlabs.com. In California's registryPrivacy page
• Modigie Incmodigie.com. In California's registryPrivacy page
• MONEVO INCtransunion.com. In Oregon's opt-out reportPrivacy page
• Monocl ABAlso known as Definitive HealthcareIn California's registryPrivacy page
• Moody's Corporationmoodys.com. In California's registryPrivacy page Contact email (from the registry): privacy@moodys.com
• MOODYS ANALYTICS INCAlso known as Moody's Analytics, Inc.moodys.com. In Oregon's opt-out reportPrivacy page Contact email (from the registry): privacy@moodys.com
• MULTIMEDIA LISTS, INC.multimedialists.com. In California's registry and Oregon's opt-out reportContact email (from the registry): optout@multimedialists.com
• MV Digital Group, LLCAlso known as CinqDIcinqdi.com. In California's registry and Oregon's opt-out reportPrivacy page Contact email (from the registry): support@cinqdi.com

Where this list comes from