Download websites that use DoubleClick Campaign Manager (DCM)

An ad server tag says less about how a site was built than about who is paying to put advertising in front of its visitors. DoubleClick Campaign Manager (DCM) is an Advertising product, and the campaign trafficking, creative delivery and attribution reporting it drives happen inside a Google console rather than inside the site's own publishing tools. The people who added the tag are usually a media agency or an in house performance team, not the developer who built the page.

The buying relationship behind the tag is what makes the footprint worth reading. Our records date the product to 2008, which is an old lineage by the standards of digital advertising, and its Proprietary licensing means every match sits on top of a commercial account rather than a downloadable install. As of October 2026 we detect it on 192 sites. A figure of that shape is not a measure of how much display advertising exists in the world, because the platform has been folded into a wider marketing stack and renamed since it first appeared, and what we match is the fingerprint the earlier product left behind. Some installations a marketer would still describe by this name are therefore counted under a different label, and some are not counted at all.

Undercounting here is structural rather than accidental. Advertising tags are increasingly deployed through a tag manager or a server side container, so the request that would identify the platform never appears in the page source a crawler reads. Conversion tags in particular fire on checkout confirmations and thank you pages that nothing reaching the front door of a domain will ever see. The count should be treated as a floor on the advertiser population, not as a census of it.

For a researcher the value sits in the cross section rather than in any one domain. Competing ad tech vendors use a list like this to size an installed base and to find accounts worth approaching. Agencies use it to separate prospects who already run measured campaigns from those still buying blind, which is the difference between a pitch and an education project. Analytics and attribution companies use it to find sites that have already accepted a third party pixel from someone, always an easier second sale than a first one.

A per domain lookup answers whether one advertiser you already have in mind runs the tag. The downloadable list answers the opposite question, which is which advertisers you had no reason to think of run it, and that is the question that produces a target set instead of a confirmation.