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This website authority checker is a free tool that pulls multiple authority metrics in one request — Karma Domain Metric (KDM), Ahrefs DR/UR, Moz DA and spam score, Semrush Authority Score (AS), Open PageRank (OPR), plus backlinks and referring domains — for up to 10 domain names at once. Compare ranking signals side by side without juggling separate tools.
Use this DR/DA checker tool as a free tool to check the domain authority of any site. Enter each domain name without https:// or paths.
Up to 10 domains per check · 1 check at a time · 10 checks per day.
Wayback archive history · domain age & continuity · independent of backlinks
Ahrefs, Moz, Open PageRank & Semrush · lower spam score is better
Use this free bulk authority checker to compare up to 10 domain names in one run. Paste your list, check DA, DR, Semrush AS, Open PageRank, and more — then review scores side by side with no signup required.
https:// or paths (e.g. example.com). Up to 10 domains per check.Karma.Domains
Improve your domain research with full reports: Wayback history, Karma Score, brand signals, and 90+ filters. See how a website's DA and link profile relate to organic traffic from Google and placement in search engine results — beyond what a single quick check shows.
Open Karma.Domains AppOur bulk website authority checker returns multiple SEO metrics per domain in a single request — KDM from web archive history, plus link-based scores from Ahrefs, Moz, Semrush, and Open PageRank for backlink strength and ranking context. Each one helps you screen domains before deeper research.
KDM is Karma.Domains' own 0–100 score built from Wayback Machine data. It reflects domain age, archive continuity, and how consistently a site attracted crawler attention — independent of its backlinks.
KDM adds a temporal dimension to classic link scores: a domain can show higher domain authority from links long after activity faded, while KDM surfaces that decay. It is not a direct Google ranking factor.
Domain rating is a 0–100 link-based score for overall domain strength. It reflects the quality and quantity of backlinks pointing to the domain — a stronger backlink profile usually means higher DR and greater ranking potential at the site level.
URL rating measures link equity for a specific page, often the homepage. It relates to page authority concepts: a domain can have solid domain authority while an inner URL — or the entry page — carries a different score.
Domain authority is a predicted 0–100 score for how well a domain might perform in search engine results. The DA score summarizes backlink data into one comparable number — useful when you need to check DA across many domains in the same niche.
Spam score flags SEO risk from 0 to 100 — lower is better. Elevated values may suggest manipulative link building; always read spam score alongside domain authority and content signals before trusting a site's search visibility.
Total backlinks show how many links point to the domain. Count alone is not authority — combine backlink volume with referring domains, DR, and DA to judge authority and backlink health for each domain.
Referring domains count unique sites that link to you. Diversity often matters more than raw backlink totals when estimating a site's strength and trust signals for SEO.
Semrush Authority Score (AS) is a 0–100 composite that blends link quality, organic traffic signals, and related SEO factors into one comparable number — useful next to Moz DA and Ahrefs DR when you want a second opinion on domain strength.
Semrush referring domains (SR RD) count unique linking sites in the Semrush index. Compare it with Moz referring domains to spot coverage differences across link databases.
Open PageRank (OPR) is an open, PageRank-style score (roughly 0–10) derived from public link graph data. It is a lightweight authority signal — read it alongside DA, DR, and Semrush AS rather than in isolation.
An authority checker estimates how strong a website is using SEO signals — mainly backlinks and link quality. Our free domain authority checker returns DR, UR, DA, spam score, backlink counts, referring domains, Semrush AS, Semrush RD, Open PageRank, and KDM for up to 10 domains per run — multiple authority metrics in one request. This authority checker uses the same data families you would expect from a website authority checker built for domain investors and SEO teams.
Domain authority summarizes link strength for an entire site on a 0–100 scale. Page authority applies the same idea to a single URL. They answer different questions: a domain can show solid site-wide DA while a specific page has a lower PA score. Our bulk run focuses on domain-level DA and DR; URL rating (UR) hints at homepage-level equity similar to page authority concepts.
Domain authority is a third-party estimate, not a Google ranking factor. Still, sites with a higher domain authority often correlate with stronger backlinks and may rank in search more often — which can drive organic traffic and traffic from Google over time. DA helps you compare domains; it does not guarantee position on search engine result pages. Use it with content quality, relevance, and technical SEO.
Paste up to ten domain names — one per line — and click Check Domain Authority. This bulk checker works like a bulk DA PA checker for domain-level scores: you can check DA and DR together with Semrush AS and Open PageRank, compare your domain against rivals, and check your domain authority without signing up. To check the DA PA relationship in depth, open full reports on Karma.Domains for page-level context.
You can paste up to 10 domains — one per line. Duplicate entries are removed automatically. Enter bare domain names (e.g. example.com) without paths or protocols when you check the domain.
Up to 10 domains per run, one check at a time, 10 checks per day.
KDM is a 0–100 score from Karma.Domains based on Wayback Machine history: archive volume, continuity, stability, and trend over time. Unlike DR or DA, it does not measure backlinks — it measures whether a domain had a real, consistent presence on the web. See our KDM blog article for details.
No. DR, DA, and Semrush Authority Score (AS) are all 0–100 link-oriented scores from different models and datasets. Open PageRank (OPR) uses a different 0–10 scale. Treat them as directional benchmarks — not interchangeable. KDM complements all of them with archive history.
Yes. The free version requires no signup for DR, UR, DA, spam score, backlinks, referring domains, Semrush AS, Semrush RD, Open PageRank, and KDM. It is a free DA checker and free tool for quick screening — like a PA checker for domain-level work, focused on DA and DR rather than full page authority reports. For deeper data, explore Karma.Domains.
Yes — on the Pro plan and above. Use the Public API for scripts and integrations, or connect the MCP server to Cursor, Claude, and other AI assistants. One API key from Profile → Settings; REST and MCP share the same rate limits.
KDM can be fetched for any domain name — it is calculated live from Wayback Machine history and does not require the domain to be in our database. Backlink-based scores (DR, UR, DA, spam score, backlinks, referring domains) are available only for domains already indexed in the Karma.Domains database. See the API documentation and MCP guide for endpoints, tools, and examples.
Bulk checking saves time when comparing expired domains, auction lists, or competitor sets. Paste your shortlist, check the domain authority for each name side by side, and spot outliers before deeper research. Use our da pa checker workflow to improve your domain authority screening: high-scoring candidates stand out faster when you rank in search for the right acquisition targets.
Link data and KDM are updated regularly from industry sources and Wayback Machine archives. These scores are estimates — use them to benchmark domains against peers and improve your domain authority strategy, not as guarantees of ranking or a website's authority in every niche. Values depend on fresh crawl data; recheck before major decisions.