Domain authority of popular websites

Which SEO and marketing tools have the highest domain authority?

Among SEO and marketing tools on this list, mailchimp.com has the highest Link Authority, 72/100, with 301,763 linking domains. 36 sites in this group are profiled.

Which software companies have the highest domain authority?

Among software and business apps on this list, apple.com has the highest Link Authority, 84/100, with 2,526,600 linking domains. 34 sites in this group are profiled.

Which open-source and developer sites have the highest domain authority?

Among open source and developer sites on this list, github.com has the highest Link Authority, 86/100, with 792,509 linking domains. 38 sites in this group are profiled.

Which website builders and hosts have the highest domain authority?

Among website builders, hosting and blogs on this list, godaddy.com has the highest Link Authority, 87/100, with 1,692,311 linking domains. 16 sites in this group are profiled.

Which news sites have the highest domain authority?

Among news and magazines on this list, forbes.com has the highest Link Authority, 73/100, with 449,995 linking domains. 44 sites in this group are profiled.

Which reference and education sites have the highest domain authority?

Among reference, research and education on this list, wikipedia.org has the highest Link Authority, 81/100, with 2,226,572 linking domains. 31 sites in this group are profiled.

Which shopping, travel and payment sites have the highest domain authority?

Among shopping, travel and payments on this list, amazon.com has the highest Link Authority, 79/100, with 1,225,528 linking domains. 23 sites in this group are profiled.

Which social networks and media sites have the highest domain authority?

Among social networks and media on this list, instagram.com has the highest Link Authority, 100/100, with 13,197,285 linking domains. 32 sites in this group are profiled.

Which search engines have the highest domain authority?

Among search engines and portals on this list, yandex.ru has the highest Link Authority, 80/100, with 986,389 linking domains. 9 sites in this group are profiled.

Which government sites have the highest domain authority?

Among government and international bodies on this list, miit.gov.cn has the highest Link Authority, 81/100, with 695,218 linking domains. 20 sites in this group are profiled.

What is Link Authority and how is it calculated?

Link Authority is MrKeyword's 0–100 score for how strongly the rest of the web links to a domain. It is calculated one of two ways. Where MrKeyword has seen links to a domain from at least 10 different domains, the score is MrKeyword's own PageRank over its link graph (the links it has seen plus its web graph), log-scaled against the strongest domain. Otherwise it places the domain's PageRank position in MrKeyword's web graph (August–October 2026) on a log curve, so the strongest domain scores 100.

• Web-graph score = 100 × (1 − ln(rank) ÷ ln(domains in the graph)), rounded, where rank is the domain's PageRank position among the 134,979,706 domains of the current release.
• Own score = 100 × ln(N × PR) ÷ ln(N × PR_max), rounded and floored at 0, where PR is the domain's PageRank (damping 0.85) over followed cross-domain links, N is the number of domains in the graph and PR_max is the strongest domain's PageRank. Links from suspected link farms count at a tenth of their weight.

Both curves are logarithmic, so moving from 80 to 90 takes far more new linking domains than moving from 20 to 30. A score describes links, not traffic or quality, and is most useful for comparing sites in the same market.

To raise your own, read how to increase domain authority, and for the very top of the web see the most-linked websites of 2026.

Where does this data come from?

Every profile reads MrKeyword's web graph (August–October 2026), MrKeyword's own domain-level link graph built from public web crawl data and covering 134,979,706 domains, plus MrKeyword's own PageRank where it has seen enough links to a site. Profiles are refreshed when MrKeyword imports a new release. Linking-domain counts are what MrKeyword has measured, not a claim about every link on the web, and links seen only in a customer's workspace are never published. Link Authority is labelled Derived: it is calculated from measured link data with the formulas above.

Why is a website missing from this list?

The list is hand-picked from well-known public websites, and a profile is published only when the site has a score and at least 500 linking domains in MrKeyword's data. It is never built from what MrKeyword users look up. For any other domain, including your own, use the free domain authority checker: up to 5 domains at once with no sign-up.