- Link Authority: 64/100 (very strong, high confidence).
- Web graph rank: #879 of 134,979,706 domains, the top 0.001% of all domains.
- 51,562 linking domains counted in MrKeyword data.
- 33 hostnames under notion.so in the web graph.
- 28th of 34 software and business apps on MrKeyword's list.
What is notion.so's domain authority?
notion.so has a MrKeyword Link Authority of 64/100, a very strong score. The score comes from where notion.so sits in MrKeyword's web graph (August–October 2026): it is #879 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 notion.so?
51,562 different domains link to notion.so 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 33 hostnames under notion.so (subdomains such as www or blog count separately).
To see individual linking websites and anchor text, open the free backlink checker for notion.so.
Which strong websites link to notion.so?
The strongest linking domain MrKeyword's web graph shows for notion.so is apple.com, with a Link Authority of 84. The table lists the 10 strongest by their own score.
Strongest domains linking to notion.so
| Linking domain | Link Authority | Web graph rank |
|---|---|---|
| apple.com | 84 | #20 |
| adobe.com | 80 | #41 |
| amazon.com | 79 | #48 |
| atlassian.com | 70 | #294 |
| ahrefs.com | 69 | #311 |
| businessinsider.com | 68 | #394 |
| huggingface.co | 66 | #536 |
| cursor.com | 66 | #619 |
| brevo.com | 66 | #627 |
| airtable.com | 65 | #726 |
6 of the 10 strongest linking domains have a profile on MrKeyword's list too (apple.com, adobe.com, amazon.com, atlassian.com, businessinsider.com, airtable.com). 4 of them are in notion.so's own group, software and business apps.
How does notion.so compare with similar websites?
notion.so is 28th of 34 software and business apps on MrKeyword's list by Link Authority, with 2 neighbours above it in the table below. The median Link Authority of those 34 software and business apps is 69, so notion.so is 5 points below it.
notion.so and its nearest peers
| Website | Link Authority | Web graph rank | Linking domains |
|---|---|---|---|
| intel.com | 65 | #708 | 44,142 |
| airtable.com | 65 | #726 | 47,003 |
| notion.so | 64 | #879 | 51,562 |
| trello.com | 63 | #1,010 | 56,112 |
| monday.com | 62 | #1,121 | 37,448 |
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 64 mean?
A Link Authority of 64 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, notion.so 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 notion.so's data come from?
Every number on notion.so'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.