Domain authority
biomedcentral.com domain authority
biomedcentral.com has a domain authority score of 76 out of 100 (high), based on 86,814 referring domains and a web graph rank of 263 among 133 million domains.
All metrics for biomedcentral.com
| Authority score | 76 / 100 |
|---|---|
| Referring domains | 86,814 |
| Web graph rank (harmonic centrality) | #263 (top 0.01%) |
| PageRank position | #690 |
| Subdomains seen in the crawl | 742 |
| Majestic Million rank | #350 |
| Majestic referring subnets / IPs | 30,498 / 65,173 |
| Traffic rank | not in Chrome's top 1M |
| Position by authority in our top 20,000 | #258 |
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 80.9 (web graph rank 263 of 133,241,980), link part 70.6 (86,814 referring domains), average 75.7, rounded to 76.
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 |
|---|---|---|---|---|---|
| 254 | gofundme.com | 76 | 90,464 | 215 | Top 5K websites (Chrome) |
| 255 | scribd.com | 76 | 90,281 | 267 | Top 1K websites (Chrome) |
| 256 | state.gov | 76 | 89,077 | 283 | Top 5K websites (Chrome) |
| 257 | service.gov.uk | 76 | 88,410 | 220 | Top 1K websites (Chrome) |
| 259 | newyorker.com | 76 | 82,542 | 259 | Top 50K websites (Chrome) |
| 260 | shutterstock.com | 76 | 79,738 | 221 | Top 5K websites (Chrome) |
| 261 | newsweek.com | 76 | 79,004 | 247 | Top 10K websites (Chrome) |
| 262 | fb.com | 76 | 77,648 | 165 | Top 500K websites (Chrome) |
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 biomedcentral.com block GPTBot? →
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FAQ
- What is the domain authority of biomedcentral.com?
- biomedcentral.com has a domain authority score of 76 out of 100 (high), based on 86,814 referring domains and a web graph rank of 263 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 biomedcentral.com have?
- biomedcentral.com is linked to from 86,814 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 biomedcentral.com rank among all websites?
- Its web graph rank (harmonic centrality) is 263 out of 133,241,980 ranked domains, which puts it in the top 0.01%. Its PageRank position is 690. Majestic Million ranks it #350.
- Is the biomedcentral.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.