Domain Authority (DA) is a metric developed by Moz that scores websites from 0 to 100 based on the strength of their overall backlink profile. Similar metrics include Ahrefs' Domain Rating (DR) and SEMrush's Authority Score.
DA is a relative metric: it's most useful for comparing your site against competitors, not as an absolute measure. A DA of 50 might be excellent in a niche market but weak in a highly competitive industry.
Why DA Matters for Both SEO and GEO
DA helps you understand your competitive position and set realistic SEO targets. It also correlates with AVI: sites with higher domain authority tend to be cited more frequently by AI models, though the correlation is not absolute:
| DA Range | SEO Competitiveness | AI Citation Tendency | Typical Site |
|---|---|---|---|
| 70+ | Dominant | Very High | Major publications, enterprise |
| 50–69 | Strong | High | Established brands, niche leaders |
| 30–49 | Competitive | Moderate | Growing businesses, quality blogs |
| 10–29 | Developing | Low (but improvable via content) | New sites, startups |
Critical insight: High DA doesn't guarantee high AVI: AI citations follow different rules. A DA 40 site with well-structured, E-E-A-T-rich content can outperform a DA 70 site in AI responses. This is why GEO strategy complements rather than replaces traditional authority building.
How Halox Helps
Halox doesn't calculate DA directly (that's Moz/Ahrefs territory), but helps you understand how authority connects to AI visibility:
- SERP Snapshot: Identifies high-DA competitors ranking for your keywords, informing content strategy
- AVI Score: Measures your AI visibility independently from DA, revealing opportunities where content quality can overcome domain authority gaps
- Content Factory: Produces well-structured, E-E-A-T-rich content that builds topical authority over time
Frequently Asked Questions
"Good" is relative to your competitive landscape. DA 30–40 is strong for a local business or niche blog. DA 40–60 is competitive in most mid-range industries. DA 60+ puts you in the top tier. The key is comparing against direct competitors, not against Wikipedia (DA 95+).
No. DA is a Moz-created metric. Google confirmed it does not use any third-party authority score. However, the factors that influence DA — quality [backlinks](/en/glossary/backlink), trustworthiness, content authority — are the same signals Google considers. DA is a useful proxy, not a direct input.
Common reasons: 1) Moz index update recalibrated scores; 2) Lost important backlinks; 3) Competitors gained more links, pushing your relative score down; 4) Spammy backlinks added to your profile. A small drop (1–3 points) during index updates is normal.
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