course.tc Website Information
Daily Unique Visits: 1,166
Daily Page Views: 2,332
Income Per Day: $7
Estimated Value: $1,680
This website is located in United States and is using following IP address 138.197.55.142. See the complete list of popular websites hosted in United States.
course.tc is registered under .TC top-level domain. Please check other sites in .TC zone.
Website course.tc is using the following name servers:
- ns-1424.awsdns-50.org
- ns-1760.awsdns-28.co.uk
- ns-6.awsdns-00.com
- ns-840.awsdns-41.net
and is probably hosted by DIGITALOCEAN-ASN - DigitalOcean, LLC, US. See the full list of other websites hosted by DIGITALOCEAN-ASN - DigitalOcean, LLC, US.
The highest website course.tc position in Alexa rank database was 30289 and the lowest rank position was 998715. Current position of course.tc in Alexa rank database is 615126.
Desktop speed score of course.tc (43/100) is better than the results of 17.28% of other sites and shows that the page desktop performance can be improved.
Mobile usability score of course.tc (99/100) is better than the results of 79.46% of other sites and means that the page is mobile-friendly.
Mobile speed score of course.tc (29/100) is better than the results of 9.19% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
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course.tc Alexa Rank
The traffic rank is based on three months of aggregated historical traffic data from millions of Alexa Toolbar users and is a combined measure of page views and users.
course.tc whois
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course.tc server information
Servers Location
course.tc desktop page speed rank
Last tested: 2017-06-08
Desktop Speed
Bad
43/100
course.tc Desktop Speed Test Quick Summary
priority - 138Optimize images
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priority - 3Reduce server response time
priority - 2Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 1 blocking CSS resources. This causes a delay in rendering your page.
Optimize CSS Delivery of the following:
https://course.tc/static/main.css?08f9c48635d31dac7438
priority - 2Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
https://course.tc/static/af7ae505a9eed503f8b8e6982036873e.woff2 (expiration not specified)
https://d8ljjx1il7dr4.cloudfront.net/images/backgr…ech-for-m-e-hero-1.png (expiration not specified)
https://d8ljjx1il7dr4.cloudfront.net/logos/TechChangeLogo.png (expiration not specified)
https://www.google-analytics.com/analytics.js (2 hours)
https://d8ljjx1il7dr4.cloudfront.net/images/backgr…ech-for-m-e-hero-1.png (expiration not specified)
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https://www.google-analytics.com/analytics.js (2 hours)
course.tc Desktop Resource Breakdown
| Total Resources | 64 |
| Number of Hosts | 12 |
| Static Resources | 50 |
| JavaScript Resources | 4 |
| CSS Resources | 1 |
course.tc mobile page speed rank
Last tested: 2019-11-28
Mobile Speed
Bad
29/100
course.tc Mobile Speed Test Quick Summary
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priority - 56Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 2 blocking CSS resources. This causes a delay in rendering your page.
Optimize CSS Delivery of the following:
https://course.tc/static/styles.min.css
https://fonts.googleapis.com/css?family=Noto+Sans:…illium+Web:400,300,700
https://fonts.googleapis.com/css?family=Noto+Sans:…illium+Web:400,300,700
priority - 3Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
https://course.tc/static/bundle.a53a74b9b0be0b0e3dc7.min.js (expiration not specified)
https://course.tc/static/styles.4f61474ada4b9026d3d1.min.js (expiration not specified)
https://course.tc/static/styles.min.css (expiration not specified)
https://course.tc/static/vendor.6503d4c16350dca1b525.min.js (expiration not specified)
https://course.tc/static/styles.4f61474ada4b9026d3d1.min.js (expiration not specified)
https://course.tc/static/styles.min.css (expiration not specified)
https://course.tc/static/vendor.6503d4c16350dca1b525.min.js (expiration not specified)
course.tc Mobile Resource Breakdown
| Total Resources | 73 |
| Number of Hosts | 4 |
| Static Resources | 67 |
| JavaScript Resources | 3 |
| CSS Resources | 2 |
course.tc mobile page usability
Last tested: 2019-11-28
Mobile Usability
Good
99/100
course.tc Mobile Usability Test Quick Summary
priority - 0Size tap targets appropriately
Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.
The following tap targets are close to other nearby tap targets and may need additional spacing around them.
The tap target
<a href="https://www.te…/terms-of-use/">Terms of Use</a> and 2 others are close to other tap targets.course.tc HTML validation
Errors
Element “li” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Line: 4 Column: 359 - 407
"...flex-row"><li action="push" href="/login" class="nav-item"><butto..." Line: 4 Column: 472 - 523
"...tton></li><li action="push" href="/register" class="nav-item"><butto..."
"...flex-row"><li action="push" href="/login" class="nav-item"><butto..." Line: 4 Column: 472 - 523
"...tton></li><li action="push" href="/register" class="nav-item"><butto..."
Attribute “action” not allowed on element “li” at this point.
Line: 4 Column: 777 - 836
"...vbar-nav"><li action="push" href="/login" class="text-white nav-item"><span>..." Line: 4 Column: 860 - 922
"...span></li><li action="push" href="/register" class="text-white nav-item"><span>..."
"...vbar-nav"><li action="push" href="/login" class="text-white nav-item"><span>..." Line: 4 Column: 860 - 922
"...span></li><li action="push" href="/register" class="text-white nav-item"><span>..."
Attribute “href” not allowed on element “li” at this point.
Line: 4 Column: 777 - 836
"...vbar-nav"><li action="push" href="/login" class="text-white nav-item"><span>..." Line: 4 Column: 860 - 922
"...span></li><li action="push" href="/register" class="text-white nav-item"><span>..."
"...vbar-nav"><li action="push" href="/login" class="text-white nav-item"><span>..." Line: 4 Column: 860 - 922
"...span></li><li action="push" href="/register" class="text-white nav-item"><span>..."
Bad value “http://twitter.com/share?url=https://course.tc/catalog&rel=techchange&via=techchange&text=Course Catalog” for attribute “href” on element “a”: Illegal character in query: space is not allowed.
Line: 4 Column: 2142 - 2382
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"...-contain"><a class="CalloutSocialMedia__share-link___LV651" href="http://twitter.com/share?url=https://course.tc/catalog&rel=techchange&via=techchange&text=Course Catalog" title="Share on Twitter" target="_blank" rel="noopener noreferrer"><div c..."
Bad value “http://www.facebook.com/sharer.php?u=https://course.tc/catalog&title=Course Catalog” for attribute “href” on element “a”: Illegal character in query: space is not allowed.
Line: 4 Column: 2596 - 2808
"...</div></a><a class="CalloutSocialMedia__share-link___LV651" href="http://www.facebook.com/sharer.php?u=https://course.tc/catalog&title=Course Catalog" title="Share on Facebook" target="_blank" rel="noopener noreferrer"><div c..."
"...</div></a><a class="CalloutSocialMedia__share-link___LV651" href="http://www.facebook.com/sharer.php?u=https://course.tc/catalog&title=Course Catalog" title="Share on Facebook" target="_blank" rel="noopener noreferrer"><div c..."
Bad value “http://www.linkedin.com/shareArticle?mini=true&url=https://course.tc/catalog&title=Course Catalog&source=TechChange” for attribute “href” on element “a”: Illegal character in query: space is not allowed.
Line: 4 Column: 3024 - 3276
".../div>0</a><a class="CalloutSocialMedia__share-link___LV651" href="http://www.linkedin.com/shareArticle?mini=true&url=https://course.tc/catalog&title=Course Catalog&source=TechChange" title="Share on LinkedIn" target="_blank" rel="noopener noreferrer"><div c..."
".../div>0</a><a class="CalloutSocialMedia__share-link___LV651" href="http://www.linkedin.com/shareArticle?mini=true&url=https://course.tc/catalog&title=Course Catalog&source=TechChange" title="Share on LinkedIn" target="_blank" rel="noopener noreferrer"><div c..."
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Line: 4 Column: 4371 - 4666
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"...t-center"><img style="width:25%;max-height:180px" src="https://www.techchange.org/wp-content/uploads/2016/10/Conflict-Management-and-peacebuilding-01.png"/><h3 cl..." Line: 4 Column: 41768 - 41925
"...t-center"><img style="width:25%;max-height:180px" src="https://d2jbbv3z6z1uwh.cloudfront.net/station-manager/wp-content/uploads/2016/12/13065500/Data-Viz-for-Dev.png"/>..." Line: 4 Column: 43178 - 43473
"...t-center"><img style="width:25%;max-height:180px" src="https://cdn.filestackcontent.com/pru0DLmTgW9OONu6ReW2?policy=eyJleHBpcnkiOjc4MTY1Nzg2MDUsImNhbGwiOlsicmVhZCIsImNvbnZlcnQiXSwiaGFuZGxlIjoicHJ1MERMbVRnVzlPT051NlJlVzIifQ==&signature=ac2383e7b59091551e854145b287236b9a5d067d67fb20fd6129ecc4d26e1524"/><h3 cl..."
Warnings
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
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course.tc Ping
Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network. It measures the round-trip time for messages sent from the originating host to a destination computer that are echoed back to the source.
course.tc TRACEROUTE
Traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. The history of the route is recorded as the round-trip times of the packets received from each successive host (remote node) in the route (path); the sum of the mean times in each hop is a measure of the total time spent to establish the connection. Traceroute proceeds unless all (three) sent packets are lost more than twice, then the connection is lost and the route cannot be evaluated.