ScorecardResearch: What It Is and Why It's Blocked
Understand the scorecardresearch.com domain, operated by Comscore, and why ad blockers block it.
Drafted by automation from the sources listed at the end of this page, and reviewed before publishing. The sources are the part that matters: check them.
What is ScorecardResearch?
The domain scorecardresearch.com is a data collection endpoint run by Comscore, Inc., an American-based global media measurement and analytics company. Comscore provides marketing data and analytics to enterprises, agencies, and publishers. This domain is used to collect browsing data from users who visit websites that use Comscore’s tracking services.
How data collection works
Comscore operates research panels where users install monitoring software, but it also collects data via scripts embedded in partner websites. The scorecardresearch.com domain is called by these scripts to record information about visits, such as page views, time spent, and demographic data when available. Comscore uses this data to generate reports on web traffic, video streaming, and consumer behavior, which are sold to clients.
Why privacy tools block it
Ad blockers and privacy extensions often block scorecardresearch.com because it is a third-party tracker. When you visit a site that uses Comscore, your browser sends requests to this domain, allowing the company to monitor your web activity, even if you are not logged in. For many users, this is a privacy concern because the tracking is not transparent and can be used to build behavioral profiles.
Limitations of DNS blocking
It is important to note that blocking the domain via DNS (such as hosts file or DNS-over-HTTPS) does not remove ads that are served from the same address as the content, as many sites use the same domain to deliver content and track. Also, blocking does not hide your IP from the site you visit, since the connection to the original site is direct. In some cases, blocking may break site functionality that depends on the script, such as videos or forms.
What to do
If you care about privacy, blocking scorecardresearch.com is a reasonable measure, but it is not complete. Consider using privacy extensions that block trackers more comprehensively, or browsers with built-in protection. The hado99 product offers extra protection, but it is not a magic solution.
In summary, scorecardresearch.com is a tracking domain used by Comscore for audience measurement. Blocking it is common in privacy tools, but you should understand its limitations.