501(c)(3) nonprofit digital library founded by Brewster Kahle in 1996 that operates the Wayback Machine alongside archives of texts, audio and video. The Wayback Machine is the standard evidentiary tool in SEO for reconstructing site history during migrations, penalty diagnosis and expired domain due diligence.
Wayback Machine web archive; hosts the HTTP Archive project.
Internet Archive is a nonprofit based in United States, founded in 1996. Membership is free.
6 other nonprofits, plus others based in United States.
Australian not-for-profit responsible for administering the .au domain, including licensing rules, eligibility and the direct .au second level. Its policies determine which country-targeted domains Australian businesses can hold, a foundational decision in Australian SEO domain strategy.
Registry operating Greece's .gr domain and the Greek-script .ελ internationalised domain, hosted at the Institute of Computer Science of FORTH. Its dual Latin and Greek-script namespaces are the practical options for Greek-language domain and country targeting.
Regional Internet Registry responsible for allocating and managing IPv4, IPv6 and AS number resources across Africa. Its allocations determine which IP ranges geolocate to African countries, a signal search engines and analytics providers use when inferring a site's location and serving localised results.
Regional Internet Registry for the Asia Pacific, allocating and registering IP addresses and AS numbers and running measurement and research programmes. Its registry data drives the IP geolocation that search engines and analytics tools use to attribute traffic and sites to Asia-Pacific countries.
501(c)(3) nonprofit founded in 2007 by Gil Elbaz that crawls the web roughly monthly with CCBot and publishes free archives exceeding 10 petabytes, with over two billion pages per crawl. At least 64% of major language models trained between 2019 and 2023 used filtered Common Crawl data, so whether a site allows CCBot materially affects its presence in AI training corpora.
Cross-industry community promoting adoption of the C2PA Content Credentials standard and maintaining open-source tools for integrating provenance into websites, apps and services. It is the practical implementation arm publishers use to attach verifiable provenance to published media.