hmhco.com domain authority

All metrics for hmhco.com

Top referring domains of hmhco.com

These are the 10 best-connected websites that link to hmhco.com in the Common Crawl domain-level web graph (release cc-main-2026-jul-aug-sep, updated quarterly). hmhco.com has 3,542 referring domains in total; 1,950 of them are among the 5,000,000 best-connected domains of the graph, which are the ones we can list and rank here.

Domain-level data: each row is a whole domain that links to hmhco.com at least once somewhere on its site, not a single backlink or page, and no anchor text or link type is included. Common Crawl samples the public web, so a link can be missing and commercial backlink tools will show more.

Traffic rank of hmhco.com

hmhco.com is in Chrome's global Top 50K websites (August 2026), and is listed in 10 countries. Six-month trend: stable: in the same bucket as 6 months ago. In the global top 1M in 12 of the last 12 months.

Top countries

Last 12 months (global)

Source: Chrome UX Report (Google, CC BY 4.0), the monthly popularity lists of origins by real Chrome page loads. A rank is a bucket, not an exact position: "Top 10K" means among the 10,000 most visited origins. It measures reach in Chrome, not visits, so it is not Similarweb traffic. Rank lists by country: Traffic rank by country.

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 64.4 (web graph rank 16,672 of 133,241,980), link part 50.7 (3,542 referring domains), average 57.6, rounded to 58.

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

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FAQ

What is the domain authority of hmhco.com?

hmhco.com has a domain authority score of 58 out of 100 (moderate), based on 3,542 referring domains and a web graph rank of 16,672 among 133 million domains; its traffic rank is Top 50K 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 hmhco.com have?

hmhco.com is linked to from 3,542 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 hmhco.com rank among all websites?

Its web graph rank (harmonic centrality) is 16,672 out of 133,241,980 ranked domains, which puts it in the top 0.02%. Its PageRank position is 15,248. Majestic Million ranks it #11,760.

Is the hmhco.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.

Which websites link to hmhco.com?

The best-connected referring domains of hmhco.com in the Common Crawl web graph (release cc-main-2026-jul-aug-sep) are google.com, apple.com, wikipedia.org, microsoft.com and github.com. This is a domain-level list from a quarterly crawl, so it names whole domains that link to hmhco.com, not individual backlinks, and it is not complete.

What is the traffic rank of hmhco.com?

hmhco.com is in Chrome's global Top 50K websites in August 2026 (Chrome UX Report, a rank bucket rather than an exact position).