Domain authority checker. Composite site-maturity score.
Enter a domain. We pull domain age (Wayback first-archive), TLS posture (cert count + CAA), and DNS health (SPF/DMARC presence) — composite into a 0-100 site-maturity score. Built from public APIs only, distinct from Moz DA.
Enter a domain. The composite site-maturity score blends four public-API signals: Wayback Machine first-archive (domain age), crt.sh Certificate Transparency log (cert deployment count), CAA DNS records (security hardening), and SPF/DMARC presence (operational maturity). Distinct from Moz DA / Ahrefs DR — this measures deployment maturity, not backlink graph.
Sources used
- Wayback Machine API — first-archive timestamp for domain age
- crt.sh — Certificate Transparency log (cert count = deployment maturity signal)
- Cloudflare DoH — DNS queries for CAA / SPF / DMARC presence
- Moz Link Explorer — for actual Moz Domain Authority (free tier limited; paid for full data)
- Ahrefs Site Explorer — for Ahrefs Domain Rating (free trial; paid for full data)
The domain is sent to Wayback + crt.sh + Cloudflare DoH only. Digital Heroes does not log queries. The composite score is computed entirely in your browser from the API responses.
Privacy: queries go to Wayback + crt.sh + Cloudflare DoH only. Digital Heroes does not log.
Authority is a third-party estimate.
Domain Authority is a Moz-proprietary 0-100 score estimating how well a site ranks in search. Ahrefs Domain Rating (DR) is the equivalent in Ahrefs' ecosystem. Google does NOT have an internal DA score and explicitly says SEO platforms' DA scores are external estimates, not ranking signals. Both Moz DA and Ahrefs DR rely on proprietary backlink crawls that no client-side tool can replicate. The composite score above measures deployment + operational maturity from public APIs — useful for prospect screening, never as a substitute for paid backlink intelligence.
Three things to remember about authority scores. One, they are NOT Google ranking signals — Google has stated this directly multiple times. Two, they correlate with rankings because they correlate with the underlying signals (backlink quality, age, crawl depth) that DO affect rankings. Three, free authority-score tools that claim to give you Moz DA without a Moz subscription are usually estimating from much smaller datasets and are inaccurate. The composite above is honest about what it measures (deployment + operational maturity) and what it doesn't (backlink-graph-derived authority).
Tools in the same cluster: WHOIS Lookup for the domain-registration view. Wayback Archive Viewer for the historical snapshots. HTTPS / SSL Checker for the deeper TLS view that feeds this composite.
Five answers.
What is domain authority?
Domain authority is a third-party metric estimating how well a website ranks in search results. The most-cited version is Moz Domain Authority (DA), a proprietary 0-100 score that combines linking root domains, total backlinks, and Moz's MozRank/MozTrust signals. Ahrefs Domain Rating (DR) is the equivalent in the Ahrefs ecosystem. Both are paid + closed-source. Google does NOT have an internal Domain Authority score and explicitly says SEO platforms' DA scores are external estimates, not ranking signals.
What does this tool's site-maturity score measure?
A composite 0-100 score from four public-API signals: domain age via Wayback Machine first-archive timestamp (older = higher), TLS deployment maturity via crt.sh Certificate Transparency log cert count (more certs over time = more mature deployment), CAA DNS record presence (security hardening), and email-auth records SPF/DMARC presence (operational maturity). It correlates with Moz DA / Ahrefs DR for established sites but is computed from different signals — useful for prospect screening, never as a substitute for paid backlink intelligence.
How do I get the actual Moz DA or Ahrefs DR?
Both are paid services. Moz Link Explorer (moz.com/link-explorer) shows Domain Authority on its free tier with limits; full data requires a Moz Pro subscription. Ahrefs Site Explorer (ahrefs.com/site-explorer) shows Domain Rating on its free trial; full backlink data requires a paid plan. For free public alternatives, Bing Webmaster Tools shows backlinks for any verified domain. The site-maturity score above is a different shape of signal entirely — it does not replicate Moz DA but is useful for the things Moz DA cannot measure (operational + security maturity).
Why doesn't this score equal Moz DA?
Moz DA is calculated from Moz's proprietary backlink crawl. Ahrefs DR is calculated from Ahrefs' proprietary backlink crawl. Common Crawl (the largest public crawl) does not expose backlink-graph queries via free public APIs. Without a public backlink dataset, no client-side tool can reconstruct DA. The score above measures DEPLOYMENT and OPERATIONAL maturity (which usually correlates with DA for legitimately-grown sites) without trying to fake the proprietary backlink calculation.
Does this tool save my data?
The domain you enter is sent to four public APIs: Wayback Machine (archive.org), crt.sh (Certificate Transparency), and Cloudflare DoH (DNS) for SPF / DMARC / CAA queries. Nothing is logged on Digital Heroes servers. Each upstream has its own privacy policy linked in the Sources panel.
Authority comes from earned links.
Our SEO engagements ship the long-game stack: technical SEO foundation + content velocity + outreach for editorial backlinks from Tier-1 publications. The composite maturity score is a side effect of the work.
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