Free Domain Authority Checker
Check any website's Domain Authority (DA), Domain Rating (DR), referring domains, and estimated organic traffic in seconds. No account required to start.
Domain Authority (DA) is a trademark of Moz and Domain Rating (DR) is a metric from Ahrefs. These are third-party 0-100 authority scores, not official Google metrics or direct ranking factors. 1Lookup is not affiliated with or endorsed by Moz, Ahrefs, or Google. Referring domain counts and organic traffic figures shown in the free tool are approximate, banded estimates and may differ from each vendor's exact reported values.
What This Domain Authority Checker Does
Our free domain authority checker gives you a fast, accurate read on any website's SEO strength. Enter a domain and instantly see its Domain Authority (Moz DA), Domain Rating (Ahrefs DR), an approximate count of referring domains, and a band for estimated monthly organic traffic. It's the quickest way to size up your own site, a prospect, or a competitor without juggling multiple paid dashboards.
Domain Authority and Domain Rating are third-party 0-100 scores built by Moz and Ahrefs to estimate how likely a site is to rank, based largely on its backlink profile. They are not official Google metrics and Google does not use them directly. We aggregate Moz-, Ahrefs-, and Majestic-style signals so you can read authority the way the rest of the SEO industry does, side by side.
The free tool is a public demo of the 1Lookup Domain SEO Intelligence API. It's rate-limited and shows banded estimates so you get genuinely useful answers at a glance. When you need exact numbers, historical trends, or bulk checks across thousands of domains, sign up for 1,000 free lookups or plug straight into the API.
How to Check Domain Authority
Enter a domain
Type any website's root domain, like example.com, into the box. You don't need the full URL, a login, or a browser extension. One domain per free check keeps results fast and rate-limit friendly.
Run the authority check
We query 1Lookup Domain SEO Intelligence, which aggregates Moz, Ahrefs, and Majestic-style metrics. In seconds you get DA, DR, approximate referring domains, and an estimated organic traffic band for the domain.
Review and go deeper
Read the scores to gauge the site's authority and link profile at a glance. To unlock exact backlink counts, keyword totals, traffic value, and page authority, sign up for free or call the API for bulk data.
DA and DR side by side
See Moz Domain Authority and Ahrefs Domain Rating together so you're never relying on a single vendor's score. Comparing both gives a more balanced view of a domain's real authority and link strength.
Referring domains at a glance
Get an approximate count of unique linking domains, the backbone of any authority score. Referring domains tell you how broad and diverse a site's backlink profile is, not just its raw link total.
Estimated organic traffic
View a band for the domain's estimated monthly organic search traffic. It's a quick reality check on whether high authority scores are actually translating into search visibility and visitors.
Free, instant, no install
Check any website's authority right in your browser with no extension, credit card, or account to start. It's a frictionless da checker for quick research, prospecting, and competitive spot checks.
Who uses this tool
Competitor and prospect research
Quickly benchmark competitors or sales prospects by their DA, DR, and link profile. A fast website authority check helps you decide which sites are worth chasing, outranking, or pitching to.
Link building and outreach
Vet potential link partners and guest-post sites before you invest in outreach. Checking domain authority and referring domains filters out low-value targets so you spend effort on links that actually move rankings.
Agency reporting and audits
Pull a quick authority snapshot for client kickoffs, audits, and pitches. A domain rating checker plus traffic estimate gives you defensible context without opening five different SEO tools.
Tracking your own growth
Run a domain authority lookup on your own site to monitor how your DA and DR trend as your backlink profile grows. It's an easy baseline to set goals and measure off-page SEO progress.
Frequently asked questions
What is a good domain authority?
There's no universal cutoff because DA is relative and varies by niche. As a rough guide, scores under 30 are typical for newer or smaller sites, 40-50 is solid, 60+ is strong, and 80+ is reserved for major brands. What matters most is how your authority compares to the sites you're actually competing with in search.
What is the difference between DA and DR?
Domain Authority (DA) is Moz's 0-100 score, while Domain Rating (DR) is Ahrefs' 0-100 score. Both estimate a site's backlink strength and ranking potential, but each uses its own crawl and formula, so the numbers rarely match exactly. Checking both, as this tool does, gives you a more reliable read than trusting one score alone.
Is domain authority a Google ranking factor?
No. Domain Authority and Domain Rating are third-party metrics from Moz and Ahrefs, not signals Google uses to rank pages. Google has stated it has no single overall "domain authority" score. These metrics are useful proxies for estimating competitiveness and link strength, but they don't directly influence your rankings.
How do I increase my domain authority?
Authority scores are driven mainly by your backlink profile, so focus on earning links from relevant, reputable sites through quality content, digital PR, and outreach. Remove or disavow toxic links, improve internal linking, and keep publishing content worth citing. Gains are gradual, so track DA and DR over time rather than expecting overnight jumps.
Is this domain authority checker really free?
Yes. You can check any domain's DA, DR, approximate referring domains, and estimated organic traffic for free with no account to start. The free tool is rate-limited and shows banded estimates. For exact figures, history, and bulk lookups, sign up for 1,000 free lookups or use the 1Lookup API.
How accurate are these authority scores?
DA and DR are estimates, not exact measurements, so treat them as directional indicators rather than absolute truth. We aggregate Moz, Ahrefs, and Majestic-style signals to give a balanced view. Scores can shift when vendors update their crawls or formulas, which is why comparing multiple metrics is more reliable than fixating on one number.
Can I check domain authority in bulk or via API?
Yes. The free checker handles one domain at a time, but the 1Lookup Domain SEO Intelligence API returns DA, DR, backlinks, keywords, traffic value, and more for thousands of domains programmatically. Sign up for 1,000 free lookups to test it, then scale up bulk authority checks through a single API call.