- Link Authority: 63/100 (very strong, high confidence).
- Web graph rank: #1,071 of 134,979,706 domains, the top 0.001% of all domains.
- 139,521 linking domains counted in MrKeyword data.
- 133 hostnames under webmd.com in the web graph.
- 23rd of 31 reference, research and education on MrKeyword's list.
What is webmd.com's domain authority?
webmd.com has a MrKeyword Link Authority of 63/100, a very strong score. The score comes from where webmd.com sits in MrKeyword's web graph (August–October 2026): it is #1,071 of 134,979,706 domains by PageRank, and Link Authority places that position on a 0–100 log curve, so the strongest domain scores 100.
This is MrKeyword's own metric, not Moz DA or Ahrefs DR (how the domain authority scores differ); how Link Authority is calculated gives both formulas.
How many websites link to webmd.com?
139,521 different domains link to webmd.com in MrKeyword's data, counting each linking website once however many links it has. That is the number SEO tools call referring domains. The web graph also lists 133 hostnames under webmd.com (subdomains such as www or blog count separately).
To see individual linking websites and anchor text, open the free backlink checker for webmd.com.
Which strong websites link to webmd.com?
The strongest linking domain MrKeyword's web graph shows for webmd.com is apple.com, with a Link Authority of 84. The table lists the 10 strongest by their own score.
Strongest domains linking to webmd.com
| Linking domain | Link Authority | Web graph rank |
|---|---|---|
| apple.com | 84 | #20 |
| adobe.com | 80 | #41 |
| dropbox.com | 75 | #111 |
| bing.com | 71 | #241 |
| atlassian.com | 70 | #294 |
| ahrefs.com | 69 | #311 |
| deloitte.com | 67 | #483 |
| cbsnews.com | 66 | #543 |
| buffer.com | 64 | #790 |
| autodesk.com | 61 | #1,566 |
7 of the 10 strongest linking domains have a profile on MrKeyword's list too (apple.com, adobe.com, dropbox.com, bing.com, atlassian.com, cbsnews.com, buffer.com). None of them is in webmd.com's own group, reference, research and education.
How does webmd.com compare with similar websites?
webmd.com is 23rd of 31 reference, research and education on MrKeyword's list by Link Authority, with 2 neighbours above it in the table below. The median Link Authority of those 31 reference, research and education is 66, so webmd.com is 3 points below it.
webmd.com and its nearest peers
| Website | Link Authority | Web graph rank | Linking domains |
|---|---|---|---|
| ox.ac.uk | 64 | #853 | 77,203 |
| nationalgeographic.com | 63 | #998 | 103,382 |
| webmd.com | 63 | #1,071 | 139,521 |
| jstor.org | 63 | #1,088 | 78,612 |
| coursera.org | 62 | #1,320 | 67,695 |
See every profiled site on the domain authority list of popular websites, or compare your own site with any of these in the free domain authority checker.
What does a Link Authority of 63 mean?
A Link Authority of 63 is very strong: far ahead of almost every other website. Domains at this level are linked from a very wide spread of other sites; gaining more points usually takes links from other very strong domains. In plain numbers, webmd.com is in the top 0.001% of the 134,979,706 domains in the web graph.
To raise your own site's score, read how to increase domain authority; for the domains at the very top, see the most-linked websites of 2026. The authority list explains why the 0–100 scale is logarithmic.
Where does webmd.com's data come from?
Every number on webmd.com's profile is read from MrKeyword's web graph (August–October 2026). This version uses data imported on 31 October 2026. How MrKeyword collects and labels this data.