DR vs DA: Which Domain Metric Actually Matters in 2026?
DR vs DA: Which Domain Metric Actually Matters in 2026?
DR and DA both claim to measure domain authority. They use different methodologies and sometimes produce divergent scores for the same domain. Knowing where they agree and where they diverge tells you more than either number alone.
What DR Measures
Ahrefs DR measures the strength of a domain's backlink profile within Ahrefs' own link graph. Updated continuously. Calculation: unique root domains linking in, weighted by their own DR, adjusted for equity dilution.
DR is a pure link graph metric — it does not factor in spam signals, content quality, or historical trust patterns.
What DA Measures
Moz DA is a probability score for how likely a domain is to rank well, based on Moz's link index. Updated monthly, not continuously. Incorporates additional signals beyond raw link count: MozTrust, spam detection signals, and link profile diversity factors.
The monthly update cycle means DA fluctuates more visibly than DR. A domain can drop 5–10 DA points between updates without losing a single real link. This volatility makes DA less reliable for tracking domain value over time.
Why Scores Disagree
Crawl coverage: Ahrefs crawls significantly more of the web than Moz, particularly for foreign-language sites, niche domains, and recently built link sources.
Common divergence patterns:
- DR 45, DA 28: Moz penalizing spam or low-trust signals Ahrefs' raw count does not filter. Investigate with Majestic TF.
- DA 45, DR 32: Moz's older index captured historical links Ahrefs has since dropped. Check referring domains trend.
- Within 10 points: generally consistent; both metrics seeing the same underlying profile.
When scores diverge by more than 15 points, it is a signal to investigate why — not to average them.
Which Metric Operators Prioritize
In practice: DR is the primary filter for domain acquisition, Majestic TF is the quality check, and DA is a distant third. Reasoning: Ahrefs has better crawl coverage for the domains operators actually buy, DR updates more frequently, and DR correlates better with Majestic TF as a cross-check.
DA is most useful as a secondary opinion when DR and TF are inconsistent with each other.
How to Use Both Without Overpaying
Scenario: domain listed at DR 48, DA 22. Divergence investigation: cross-reference with Majestic TF. If TF 25+ with TF:CF ≥ 0.5, Moz likely missed links — DR 48 is credible. If TF 8 with TF:CF 0.2, the quality problem spans two independent metrics — real quality issues regardless of DR score.
Do not pay DR 48 pricing for a domain with consistent quality flags across multiple independent metrics.
A Practical Scoring Framework
Decision process: DR ≥ 30 AND TF ≥ 15 AND TF:CF ≥ 0.5 passes the initial filter. DA as secondary check: if DA is more than 15 points below DR, investigate the discrepancy before committing. Use DR and TF as the primary evaluation pair — TF provides quality signal that DA approximates less accurately for niche domains outside Moz's primary crawl coverage.