List of technologies used in DoubleVerify Holdings, Inc.

• The survey targets corporate websites.
• Corporate sites are basically a page for investors, etc. May not be a site for general consumer
• Some companies were unable to get information due to network errors or other reasons.
• Therefore, the total number of companies surveyed differs from the total number of listed companies.
• The technology used on the website is checked at least once a month.
• The survey targets includes funds, etc.
• Multiple corporate sites may exist on the same domain, mainly funds.

The technology used on each company's site is obtained using Wappalyzer. This site uses information from Wappalyzer.