How Ad Verification Companies Use Proxies at Scale

Ad verification is a multi-billion dollar industry, and proxies are its backbone. Companies like DoubleVerify, IAS, and MOAT use massive proxy networks to verify ads are displayed correctly worldwide. Here is how the industry works and what you can learn from it. What Is Ad Verification? Ad verification ensures that digital advertisements: Display correctly — Right creative, right format, right placement Reach the right audience — Proper geographic and demographic targeting Appear in brand-safe environments — Not next to inappropriate content Are viewable — Actually visible to users, not hidden below the fold Are not fraudulent — Real impressions from real users, not bots Why Ad Verification Needs Proxies Geographic Verification An advertiser running campaigns in 50 countries needs to verify ads display correctly in each location. You cannot check a geo-targeted ad in Brazil from an office in New York. Proxies provide: Exit IPs in every target country City-level targeting for local ad