Domain authority
nhm.ac.uk domain authority
nhm.ac.uk has a domain authority score of 68 out of 100 (above average for a business website), based on 14,888 referring domains and a web graph rank of 777 among 133 million domains; its traffic rank is Top 100K websites (Chrome).
All metrics for nhm.ac.uk
| Authority score | 68 / 100 |
|---|---|
| Referring domains | 14,888 |
| Web graph rank (harmonic centrality) | #777 (top 0.01%) |
| PageRank position | #3,953 |
| Subdomains seen in the crawl | 44 |
| Majestic Million rank | #2,431 |
| Majestic referring subnets / IPs | 8,545 / 17,489 |
| Traffic rank | Top 100K websites (Chrome) |
| Position by authority in our top 20,000 | #1,459 |
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 76.8 (web graph rank 777 of 133,241,980), link part 59.6 (14,888 referring domains), average 68.2, rounded to 68.
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 |
|---|---|---|---|---|---|
| 1,455 | vedomosti.ru | 68 | 15,463 | 922 | Top 10K websites (Chrome) |
| 1,456 | freecodecamp.org | 68 | 15,380 | 1,053 | Top 50K websites (Chrome) |
| 1,457 | odnoklassniki.ru | 68 | 15,149 | 946 | not in Chrome's top 1M |
| 1,458 | java.com | 68 | 14,992 | 978 | Top 50K websites (Chrome) |
| 1,460 | towardsdatascience.com | 68 | 14,868 | 813 | Top 500K websites (Chrome) |
| 1,461 | digiday.com | 68 | 14,785 | 981 | Top 1M websites (Chrome) |
| 1,462 | iz.ru | 68 | 14,772 | 1,004 | Top 50K websites (Chrome) |
| 1,463 | zerohedge.com | 68 | 14,727 | 767 | Top 50K websites (Chrome) |
Tech stack
nhm.ac.uk is built with Next.js, React, Cloudflare Web Analytics, Adobe Experience Platform Launch, Google Tag Manager, Cloudflare, Cloudflare Bot Management and Adobe Experience Manager and 1 more (detected from the public home page). Full tech stack of nhm.ac.uk →
AI crawler policy
AI crawler policy: Open. GPTBot is allowed, ClaudeBot is allowed and PerplexityBot is allowed in its robots.txt (checked 2026-10-02). Does nhm.ac.uk block GPTBot? →
Compare and browse
FAQ
- What is the domain authority of nhm.ac.uk?
- nhm.ac.uk has a domain authority score of 68 out of 100 (above average for a business website), based on 14,888 referring domains and a web graph rank of 777 among 133 million domains; its traffic rank is Top 100K websites (Chrome). The score is our own open-data metric (0-100) and is not Moz Domain Authority or Ahrefs Domain Rating.
- How many backlinks does nhm.ac.uk have?
- nhm.ac.uk is linked to from 14,888 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 nhm.ac.uk rank among all websites?
- Its web graph rank (harmonic centrality) is 777 out of 133,241,980 ranked domains, which puts it in the top 0.01%. Its PageRank position is 3,953. Majestic Million ranks it #2,431.
- Is the nhm.ac.uk 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.