Domain authority
reference.com domain authority
reference.com has a domain authority score of 64 out of 100 (above average for a business website), based on 14,270 referring domains and a web graph rank of 4,980 among 133 million domains.
All metrics for reference.com
| Authority score | 64 / 100 |
|---|---|
| Referring domains | 14,270 |
| Web graph rank (harmonic centrality) | #4,980 (top 0.01%) |
| PageRank position | #13,765 |
| Subdomains seen in the crawl | 34 |
| Majestic Million rank | #1,550 |
| Majestic referring subnets / IPs | 11,408 / 21,052 |
| Traffic rank | not in Chrome's top 1M |
| Position by authority in our top 20,000 | #3,180 |
How the authority score is calculated
The score is the average of two parts, each from 0 to 100:
- Rank part:
100 × (1 − log10(rank) / log10(N))^0.6, where rank is the domain's harmonic centrality position in the Common Crawl web graph (how close it is to every other domain through links) and N is the number of ranked domains (133,241,980). - Link part:
100 × log10(1 + referring domains) / 7, so 10 million referring domains = 100.
For this domain: rank part 69.5 (web graph rank 4,980 of 133,241,980), link part 59.3 (14,270 referring domains), average 64.4, rounded to 64.
It is consistent across all 120 million domains in the data, so it is good for ranking and filtering lists. It is not Moz Domain Authority or Ahrefs Domain Rating. Referring domains count other domains that link to this one, not individual backlinks; no list of linking pages is included.
Domains with a similar authority score
| # | Domain | Authority | Referring domains | Web graph rank | Traffic rank |
|---|---|---|---|---|---|
| 3,176 | rainn.org | 64 | 14,316 | 7,110 | Top 500K websites (Chrome) |
| 3,177 | ocregister.com | 64 | 14,314 | 6,327 | Top 100K websites (Chrome) |
| 3,178 | hh.ru | 64 | 14,276 | 5,178 | Top 5K websites (Chrome) |
| 3,179 | caesars.com | 64 | 14,272 | 7,028 | Top 50K websites (Chrome) |
| 3,181 | volkskrant.nl | 64 | 14,251 | 5,164 | Top 10K websites (Chrome) |
| 3,182 | kuronekoyamato.co.jp | 64 | 14,242 | 5,363 | Top 5K websites (Chrome) |
| 3,183 | aaos.org | 64 | 14,235 | 6,335 | Top 1M websites (Chrome) |
| 3,184 | cdn-website.com | 64 | 14,226 | 5,527 | not in Chrome's top 1M |
Tech stack
reference.com is built with Tailwind CSS and Google Fonts (detected from the public home page). Full tech stack of reference.com →
AI crawler policy
AI crawler policy: No robots.txt. GPTBot is allowed, ClaudeBot is allowed and PerplexityBot is allowed in its robots.txt (checked 2026-10-02). Does reference.com block GPTBot? →
Compare and browse
FAQ
- What is the domain authority of reference.com?
- reference.com has a domain authority score of 64 out of 100 (above average for a business website), based on 14,270 referring domains and a web graph rank of 4,980 among 133 million domains. The score is our own open-data metric (0-100) and is not Moz Domain Authority or Ahrefs Domain Rating.
- How many backlinks does reference.com have?
- reference.com is linked to from 14,270 other domains in the Common Crawl web graph (release cc-main-2026-jul-aug-sep). This counts referring domains, not individual backlinks, and Common Crawl does not see the whole web, so commercial tools that crawl more will show larger numbers.
- How does reference.com rank among all websites?
- Its web graph rank (harmonic centrality) is 4,980 out of 133,241,980 ranked domains, which puts it in the top 0.01%. Its PageRank position is 13,765. Majestic Million ranks it #1,550.
- Is the reference.com authority score the same as Moz DA or Ahrefs DR?
- No. It is an independent score computed from open data (Common Crawl, Majestic Million, Chrome UX Report). It is consistent across all domains, so it works for comparing and filtering sites, but the numbers will not match the commercial tools.