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Search Engine Referral Report for 2021 Q4

Cloudflare finds itself in a position where it can reliably estimate the search engine market share. These reports are produced quarterly and each covers a group of search engines broke down by client location and operating system. The strategy we use relies on the referer header we see when we get an HTTP/S request.


Report metadata

Cloudflare Data Insights Team
31 December 2021
  • Search Engines

Table of contents


Methodology

Procedure

Our goal is to determine the market share of general search engines around the world.

Cloudflare accelerates and protects traffic for large parts of the Internet, with a global network that spans more than 200 cities in over 100 countries. Approximately 25 million Internet properties rely on Cloudflare's network to reach their audiences. More than 10% of all websites connect through our reverse proxy, including 17% of the Fortune 1000.

Due to the size of our network we are in a unique position to measure statistically relevant market share data.

Our methodology uses the referer header. Whenever a link is clicked from a given search engine, that search engine is identified by this header. For this analysis, we only use the referer origin, and not any referer paths or query strings.

Notes


Global market share


Market share by country


Market share by OS


Market share by country and OS