The metric that matters for backlink growth is referring domains, the count of unique sites linking to you, not total backlinks. Track it in Ahrefs or Moz over time, watch the trend line, and pay attention to which new domains show up, because ten links from one blog are worth far less than links from ten different sites.
Key takeaways
- Track referring domains, the count of unique sites linking to you, not total backlinks.
- View the referring-domains graph over months in Ahrefs or Moz and read the slope, not a single snapshot.
- New unique domains beat repeat links from a site already linking to you.
- Skim new domains for relevance and quality, since a burst of spammy links can signal a bad vendor or attack.
Count domains, not links
A single website can send you a hundred links from its footer or sidebar. That inflates your total backlink count and tells you almost nothing. Referring domains, the number of distinct websites linking to you, is the honest measure of reach. In Ahrefs it is the "Referring domains" figure; Moz shows it as linking root domains. Chart that number month over month and you are watching real growth.
Read the trend, not the snapshot
One reading is a data point. Twelve are a story. Both Ahrefs and Moz let you view referring domains over time as a graph. A steady upward slope means your link-building or PR is compounding. A flat line means whatever you are doing has stalled. A sudden drop can mean links were removed or a linking site went down, worth investigating.
New domains beat repeat links
When you review your report, sort for newly acquired referring domains. Ten links from ten cannabis publications, dispensary directories, and local news sites do far more for your authority than ten more links from a site already linking to you. Growth in unique domains is the number to celebrate, not raw link volume.
A worked example
A brand pulled its Ahrefs referring-domains graph and saw it flat at around 85 for six months despite steady blogging. The blogging was earning links, but all from sites already linking to them. They shifted effort to guest posts on cannabis industry sites and outreach to local press. Over the next quarter referring domains climbed from 85 to 118, and their non-branded rankings for competitive terms started moving with it.
Watch for the wrong kind of growth
Not all new domains are good news. A sudden burst of links from unrelated, low-quality, or spammy sites can be a negative SEO attempt or a sketchy vendor's work. Skim new referring domains for relevance and quality. In cannabis, where some link vendors cut corners, this check is worth doing every time you review the report.
Frequently asked questions
Should I track total backlinks or referring domains?
Referring domains. Total backlinks can balloon from one site linking to you many times, which tells you little. The count of unique domains linking to you is the honest measure of reach and authority, and it is what to chart over time in Ahrefs or Moz.
How do I see referring domains over time?
Both Ahrefs and Moz show referring domains, or linking root domains, as a graph across months. A steady climb means your link-building is compounding, a flat line means it has stalled, and a drop is worth investigating for removed links or a downed source.
Are new links always a good sign?
No. A burst of links from unrelated, low-quality, or spammy domains can signal a negative SEO attempt or a careless vendor. Review new referring domains for relevance and quality, which matters in cannabis where some link sellers cut corners.
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