Advertising
Who left MainAd, and who still runs it
214 websites in the top 1M run MainAd, observed directly from the rendered page in the July 2026 crawl.
29
stopped running it that month
11
of those are 11–500 employees
130
adopted it in the last year
Confirmed across two consecutive crawls, not a single month. Build the list →
Some companies running MainAd
Every row in a full list carries the prospect's whole detected stack.
Not currently available as a list.
What else they run
AWIN 98%Google Analytics 92%core-js 89%Cloudflare 79%Open Graph 79%Priority Hints 75%HSTS 74%Google Tag Manager 73%Cart Functionality 72%Microsoft Advertising 69%
Share of a 214-domain sample of MainAd users that also run each.