See every unique domain linking to any website. Free referring domains tool with authority scores, link counts, and growth tracking.
Referring domains count the unique websites linking to you — not total links. This is the metric Google actually pays attention to. 100 links from one site = 1 referring domain. 1 link each from 100 different sites = 100 referring domains. The second case is vastly more valuable.
A healthy referring domain profile grows steadily, includes a mix of authority levels (you want some big-name links and some smaller-site links — all big-name looks unnatural), comes from topically relevant sites, and uses diverse anchor text.
This tool lets you check your own profile and any competitor's. The fastest way to improve link building: see which referring domains your top competitors have that you don't, and figure out how to earn the same links.
Natural link growth is steady and uneven — a few new referring domains per week, the occasional spike from a viral post or PR mention. Sudden bursts of dozens of new domains in a day, all with similar anchor text, look like paid links and can trigger algorithm penalties.
Aim for 5-20 new referring domains per month from a mix of sources: guest posts, resource mentions, journalist quotes, podcast appearances, and natural mentions earned by good content.
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