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Ck12.org

CK-12 Foundation provides a library of free online textbooks, videos, exercises, flashcards, and real world applications for over 5000 concepts from arithmetic to history
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Top Keywords from Search Engines mental math + 4 more>>
Ck12.org is ranked 6,469th in the world (amongst the 30 million domains). A low-numbered rank means that this website gets lots of visitors. This site is relatively popular among users in the united states. It gets 89% of its traffic from the united states . This site is estimated to be worth $464875. It has 111 backlinks. Ck12.org has 66% seo score.
Popularity: Safety: Social signals: Legit: legal Rating:
www.ck12.org
4.0/5.0
by
WebstatsDomain

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Web Safety

ck12.org is a safe website. This information is from Google, AVG Threat Labs, McAfee SiteAdvisor, Wot.

Google Safebrowsing:
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Child Safety

Status:

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General Statistics

Title: Free Online Textbooks, Flashcards, Adaptive Practice, Real World Examples, Simulations | CK-12 Found... more
Description: CK-12 Foundation provides a library of free online textbooks, videos, exercises, flashcards, and real world applications for over 5000 concepts from a... more
SEO score: 66%
Website Worth: $464,875 USD
Web Safety:
Web safety signals the level of trust for the site's suitability for all users.
Child Safety:
Child safety signals the level of trust for the site's suitability for children.
Alexa Rank: 6,469
Primary Traffic:
The country where current domain is most popular relative to the other countries
united states
Alexa backlinks: 7,004
Webstatsdomain backlinks:
IP-address: 54.243.211.55 [Trace] [Reverse]
Server Location: United States (Ashburn) [See domains hosted in Ashburn | United States]
Date Registered: 2006-12-16 08:37:03
Site Age: 10 years and 4 months
Pageviews per User: 4.21
Average Time on Site: 05:37
Search Percent:
Estimated percentage of visits to www.ck12.org that came from a search engine
15.9%
Bounce:
Estimated percentage of visits to www.ck12.org that consist of a single pageview
45.5%
Daily Pageviews: n\a
Sites redirect to this site: ck-12.org, ck-12.com, ck12.co, ck-12.net, getrealcompetition.org, studyhelp.org, studyhelp.net, watergoodness.org, flexbook.org more (9)
Load Time: 0.02 seconds

Website categories

Currently, we found 12 categories on ck12.org
textbooks 8'128 sites online textbooks 63 sites
education 215'355 sites opensource 5'310 sites
textbook 3'954 sites technology 251'411 sites
Show more

Domain Name

Domain Name: www.ck12.org
Registrar: Network Solutions, LLC (R63-LROR)
Domain Age: 10 years and 4 months
Time Left: 7 months
Creation: 2006-12-16
Expiration: 2017-12-16
See ck12.org whois information

Top Keywords

This report shows links that we found on other domains than the index page. You can use this list of domains in order to understand what content users like.

Keyword Position Date
seismographs measure strength earthquakes
1 2016-02-10
amphibian reproduction water
1 2016-02-10
amphibian reproduction and development
1 2016-02-10
main characteristics of igneous rocks
1 2016-02-10
autotroph and heterotroph compare
1 2016-02-10
heterotroph vs autotroph
1 2016-02-10
autotroph vs heterotroph nutrition
1 2016-02-10
heterotroph and autotroph difference
1 2016-02-10
heterotroph and autotroph worksheet
1 2016-02-10
difference between heterotroph and autotroph
1 2016-02-10

Keywords Consistency

In this table we show keywords that are most commonly found on the site. Words marked with 2 or 3 stars best describe the theme of the site.

This site is well optimized for word - ck-12

  Keywords Freq Title Desc <H> Anchors
ck-12 24
science 16
physics 9
chemistry 9
help 8
  Keywords (2 words) Freq Title Desc <H> Anchors
ck-12 foundation 6
study guides 4
earth science 4
real world 4
physical science 4
  Keywords (3 words) Freq Title Desc <H> Anchors
sign in with your email facebook google 2
facebook google twitter 2
google twitter or microsoft 2
twitter or microsoft live 2
create an account with ck-12 2

Headings

Excellent, your website is structured using HTML headings (<H1> to <H6>). Always Use an <H1> Heading Tag. Search engines place a lot of value on the text inside <H1> tags, so make sure that it's optimized and well represents the page content.

<H1> <H2> <H3> <H4> <H5> <H6>
114100
<H1> say thanks this season.
<H2> results are in
<H3> math
<H3> science

Anchors Cloud

Anchors Cloud: List of most used anchor phrases in the anchor tags of the referring domains. An example would be "webstatsdomain" in "<a href="http://webstatsdomain.org">webstatsdomain</a>"

  • ck12.org( 13% )
  • ck-12 foundation( 13% )
  • ck-12( 13% )
  • http://www.ck12.org/flexbook( 13% )
  • flexbooks( 11% )
  • ck-12.org( 9% )
  • ck12( 6% )
  • privacy( 4% )
  • we team up with ck-12 for stem( 4% )
  • intermediate physics( 4% )
  • ck-12 flexbooks( 4% )

Terms Cloud

List of most used terms in the anchor text of the referring domains. An example would be "Webstatsdomain" in "<a href="http://webstatsdomain.org">Free website statistics, analysis, review - Webstatsdomain</a>"

  • ck-12( 30% )
  • flexbooks( 15% )
  • physics( 7% )
  • intermediate( 7% )
  • stem( 7% )
  • privacy( 7% )
  • foundation( 7% )
  • ck12( 7% )
  • team( 7% )

Alexa traffic graph

Alexa traffic rank shows the popularity of your site relative to other sites. Ck12.org is ranked 6,469th in the world (among the 30 million domains). A low-numbered rank means that your website gets a lot of visitors.

Alexa rank: 6,469 visit alexa Alexa backlinks: 7,004
This report show rough estimate of ck12.org's popularity
The top queries driving traffic to www.ck12.org from search engines.
characteristics of life
phospholipid bilayer
photosynthesis and cellular respiration
mental math
mutually inclusive

Visitors Localization

Traffic Estimations High
Traffic Rank 6,469th most visited website in the World
united states 89 philippines 2.4
india 1.6 canada 1.4
great britain 0.9

Websites hosted on same IP

Domain Popularity
Favicon for ineedapencil.ck12.org   ineedapencil.ck12.org
Favicon for flexmath.com   flexmath.com
Favicon for ck-12.net   ck-12.net
Favicon for ck12.co   ck12.co
Favicon for ck-12.org   ck-12.org

Website Load Time

Website load time is an important factor, because Google is taking the site’s loading speed into consideration in determining its ranking. Even though this will not have a big impact, it is still something we (webmasters) should really look into. The reason is pretty simple – the majority of visitors are usually in a rush and no one is fond of waiting half a century before the website finally loads its content or fails to load. At the last check on 2016-08-30, website load time was 0.02. The highest load time is 0.71, the lowest load time is 0.02, the average load time is 0.14.

Contact information:

http://www.ck12.org/about/ - CK-12 Community Site General information about CK-12
http://www.ck12.org/about/feedback/ - Give FeedbackCK-12 Community Site
https://plus.google.com/111140297209948672510/ - CK-12 Foundation - Google+
@CK12Foundation - CK-12 Foundation (CK12Foundation) auf Twitter
See ck12.org contact information in whois record

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