ck12.org domain authority

All metrics for ck12.org

Top referring domains of ck12.org

These are the 10 best-connected websites that link to ck12.org in the Common Crawl domain-level web graph (release cc-main-2026-jul-aug-sep, updated quarterly). ck12.org has 2,518 referring domains in total; 1,148 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 ck12.org 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 ck12.org

ck12.org 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 62.8 (web graph rank 23,904 of 133,241,980), link part 48.6 (2,518 referring domains), average 55.7, rounded to 56.

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 ck12.org?

ck12.org has a domain authority score of 56 out of 100 (moderate), based on 2,518 referring domains and a web graph rank of 23,904 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 ck12.org have?

ck12.org is linked to from 2,518 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 ck12.org rank among all websites?

Its web graph rank (harmonic centrality) is 23,904 out of 133,241,980 ranked domains, which puts it in the top 0.02%. Its PageRank position is 29,041. Majestic Million ranks it #20,423.

Is the ck12.org 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 ck12.org?

The best-connected referring domains of ck12.org in the Common Crawl web graph (release cc-main-2026-jul-aug-sep) are google.com, wikipedia.org, github.com, amazonaws.com and blogspot.com. This is a domain-level list from a quarterly crawl, so it names whole domains that link to ck12.org, not individual backlinks, and it is not complete.

What is the traffic rank of ck12.org?

ck12.org is in Chrome's global Top 50K websites in August 2026 (Chrome UX Report, a rank bucket rather than an exact position).