Domain authority
cmail19.com domain authority
cmail19.com has a domain authority score of 62 out of 100 (above average for a business website), based on 8,380 referring domains and a web graph rank of 7,611 among 133 million domains.
All metrics for cmail19.com
| Authority score | 62 / 100 |
|---|---|
| Referring domains | 8,380 |
| Web graph rank (harmonic centrality) | #7,611 (top 0.01%) |
| PageRank position | #14,876 |
| Subdomains seen in the crawl | 5,104 |
| Majestic Million rank | #6,695 |
| Majestic referring subnets / IPs | 4,413 / 7,365 |
| Traffic rank | not in Chrome's top 1M |
| Position by authority in our top 20,000 | #5,079 |
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 67.7 (web graph rank 7,611 of 133,241,980), link part 56.0 (8,380 referring domains), average 61.9, rounded to 62.
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 |
|---|---|---|---|---|---|
| 5,075 | pg.com | 62 | 8,411 | 6,366 | Top 500K websites (Chrome) |
| 5,076 | reading.ac.uk | 62 | 8,403 | 6,103 | Top 500K websites (Chrome) |
| 5,077 | brandeis.edu | 62 | 8,402 | 8,759 | Top 500K websites (Chrome) |
| 5,078 | concordia.ca | 62 | 8,395 | 6,461 | Top 500K websites (Chrome) |
| 5,080 | the-scientist.com | 62 | 8,376 | 6,227 | Top 1M websites (Chrome) |
| 5,081 | cbr.com | 62 | 8,373 | 8,420 | Top 5K websites (Chrome) |
| 5,082 | india.gov.in | 62 | 8,369 | 8,551 | Top 10K websites (Chrome) |
| 5,083 | metropoles.com | 62 | 8,365 | 6,133 | Top 5K websites (Chrome) |
Tech stack
cmail19.com is built with Nginx and OpenResty (detected from the public home page). Full tech stack of cmail19.com →
AI crawler policy
AI crawler policy: Blocks all AI search. GPTBot is blocked, ClaudeBot is blocked and PerplexityBot is blocked in its robots.txt (checked 2026-10-02). Does cmail19.com block GPTBot? →
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FAQ
- What is the domain authority of cmail19.com?
- cmail19.com has a domain authority score of 62 out of 100 (above average for a business website), based on 8,380 referring domains and a web graph rank of 7,611 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 cmail19.com have?
- cmail19.com is linked to from 8,380 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 cmail19.com rank among all websites?
- Its web graph rank (harmonic centrality) is 7,611 out of 133,241,980 ranked domains, which puts it in the top 0.01%. Its PageRank position is 14,876. Majestic Million ranks it #6,695.
- Is the cmail19.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.