nptel.ac.in Website Information
Daily Unique Visits: 218,569
Daily Page Views: 1,748,552
Income Per Day: $1,749
Estimated Value: $1,888,920
This website is located in India and is using following IP address 14.139.160.71. See the complete list of popular websites hosted in India.
nptel.ac.in is registered under .IN top-level domain. Please check other sites in .IN zone.
Website nptel.ac.in is using the following name servers:
- dns2.iitm.ac.in
- dns3.iitm.ac.in
- dns1.iitm.ac.in
and is probably hosted by NKN-CORE-NW NKN Core Network, IN. See the full list of other websites hosted by NKN-CORE-NW NKN Core Network, IN.
The highest website nptel.ac.in position in Alexa rank database was 623 and the lowest rank position was 36495. Current position of nptel.ac.in in Alexa rank database is 6972.
Desktop speed score of nptel.ac.in (76/100) is better than the results of 64.66% of other sites and shows that the page desktop performance can be improved.
Mobile usability score of nptel.ac.in (76/100) is better than the results of 38.19% of other sites and means that the page is not mobile-friendly.
Mobile speed score of nptel.ac.in (37/100) is better than the results of 11.98% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
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nptel.ac.in 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.
nptel.ac.in whois
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Access to .IN WHOIS information is provided to assist persons in determining the contents of a domain name registration record in the .IN registry database. The data in this record is provided by .IN Registry for informational purposes only, and .IN does not guarantee its accuracy. This service is intended only for query-based access. You agree that you will use this data only for lawful purposes and that, under no circumstances will you use this data to: (a) allow, enable, or otherwise support the transmission by e-mail, telephone, or facsimile of mass unsolicited, commercial advertising or solicitations to entities other than the data recipient's own existing customers; or (b) enable high volume, automated, electronic processes that send queries or data to the systems of Registry Operator, a Registrar, or Afilias except as reasonably necessary to register domain names or modify existing registrations. All rights reserved. .IN reserves the right to modify these terms at any time. By submitting this query, you agree to abide by this policy.
Domain ID:D7895392-AFIN
Domain Name:NPTEL.AC.IN
Created On:02-Dec-2013 10:33:19 UTC
Last Updated On:31-Jan-2014 19:20:29 UTC
Expiration Date:02-Dec-2018 10:33:19 UTC
Sponsoring Registrar:ERNET India (R9-AFIN)
Status:OK
Reason:
Registrant ID:R1311251528 R
Registrant Name:Dr. Andrew Thangaraj
Registrant Organization:Indian Institute of Technology Madras
Registrant Street1:NPTEL Office, Web Studio,IC & SR Building IIIrd Floor,IITMadras
Registrant Street2:Chennai 600036 Tamil Nadu
Registrant Street3:
Registrant City:Chennai
Registrant State/Province:Tamil Nadu
Registrant Postal Code:600036
Registrant Country:IN
Registrant Phone:+91.4422575905
Registrant Phone Ext.:
Registrant FAX:
Registrant FAX Ext.:
Registrant Email:andrew@ee.iitm.ac.in
Admin ID:R1311251528 A
Admin Name:Usha Nagarajan
Admin Organization:Indian Institute of Technology Madras
Admin Street1:NPTEL Office, Web Studio,IC & SR Building IIIrd Floor,IITMadras
Admin Street2:Chennai 600036 Tamil Nadu
Admin Street3:
Admin City:Chennai
Admin State/Province:Tamil Nadu
Admin Postal Code:600036
Admin Country:IN
Admin Phone:+91.4422575905
Admin Phone Ext.:
Admin FAX:
Admin FAX Ext.:
Admin Email:nptel@iitm.ac.in
Tech ID:R1311251528 T
Tech Name:Dr. Andrew Thangaraj
Tech Organization:Indian Institute of Technology Madras
Tech Street1:NPTEL Office, Web Studio,IC & SR Building IIIrd Floor,IITMadras
Tech Street2:Chennai 600036 Tamil Nadu
Tech Street3:
Tech City:Chennai
Tech State/Province:Tamil Nadu
Tech Postal Code:600036
Tech Country:IN
Tech Phone:+91.4422575905
Tech Phone Ext.:
Tech FAX:
Tech FAX Ext.:
Tech Email:andrew@ee.iitm.ac.in
Name Server:DNS1.IITM.AC.IN
Name Server:DNS2.IITM.AC.IN
Name Server:
Name Server:
Name Server:
Name Server:
Name Server:
Name Server:
Name Server:
Name Server:
Name Server:
Name Server:
Name Server:
DNSSEC:Unsigned
nptel.ac.in server information
Servers Location
nptel.ac.in desktop page speed rank
Last tested: 2016-07-09
nptel.ac.in Desktop Speed Test Quick Summary
priority - 15 Leverage 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:
http://nptel.ac.in/newstyles/css/style.css (expiration not specified)
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http://nptel.ac.in/newstyles/js/bootstrap.3.3.4.js (expiration not specified)
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priority - 8 Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 3 blocking script resources and 3 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
http://nptel.ac.in/newstyles/js/bootstrap.3.3.4.js
http://nptel.ac.in/newstyles/js/script.js
Optimize CSS Delivery of the following:
http://fonts.googleapis.com/css?family=Open+Sans:3…,700italic,400,300,700
http://nptel.ac.in/newstyles/css/style.css
priority - 4 Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 41.9KiB (49% reduction).
Minifying http://nptel.ac.in/newstyles/js/script.js could save 2.1KiB (36% reduction) after compression.
priority - 3 Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 25.9KiB (37% reduction).
Losslessly compressing http://nptel.ac.in/newstyles/images/twitter.png could save 4.8KiB (18% reduction).
priority - 0 Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 1.1KiB (20% reduction).
priority - 0 Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 1KiB (17% reduction).
nptel.ac.in Desktop Resource Breakdown
| Total Resources | 38 |
| Number of Hosts | 3 |
| Static Resources | 30 |
| JavaScript Resources | 3 |
| CSS Resources | 3 |
nptel.ac.in mobile page speed rank
Last tested: 2018-02-08
nptel.ac.in Mobile Speed Test Quick Summary
priority - 128 Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 1.2MiB (95% reduction).
Compressing and resizing http://nptel.ac.in/img/logo/Image-01.jpg could save 123.7KiB (99% reduction).
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Compressing and resizing https://onlinecourses.nptel.ac.in/noc18_bt01/assets/img/yt.png could save 10.3KiB (93% reduction).
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priority - 32 Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 3 blocking script resources and 11 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
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http://nptel.ac.in/newstyles/js/script.js
Optimize CSS Delivery of the following:
http://fonts.googleapis.com/css?family=Source+Sans+Pro:400,900
http://nptel.ac.in/newstyles/css/bootstrap.3.3.4.css
http://fonts.googleapis.com/css?family=Open+Sans:3…,700italic,400,300,700
http://nptel.ac.in/newstyles/css/style.css
http://nptel.ac.in/newstyles/css/footer.css
http://fonts.googleapis.com/css?family=Cookie
http://nptel.ac.in/css/lightslider.css
http://nptel.ac.in/css/testimonial.css
https://cdnjs.cloudflare.com/ajax/libs/owl-carouse…3/owl.carousel.min.css
https://cdnjs.cloudflare.com/ajax/libs/owl-carousel/1.3.3/owl.theme.min.css
priority - 22 Leverage 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:
http://nptel.ac.in/css/testimonial.css (expiration not specified)
http://nptel.ac.in/images/Poster1.png (expiration not specified)
http://nptel.ac.in/images/Slider_new.gif (expiration not specified)
http://nptel.ac.in/images/booklet_18/001.jpg (expiration not specified)
http://nptel.ac.in/img/logo/Image-01.jpg (expiration not specified)
http://nptel.ac.in/img/logo/Image-02.jpg (expiration not specified)
http://nptel.ac.in/img/logo/Image-03.jpg (expiration not specified)
http://nptel.ac.in/img/logo/Image-04.jpg (expiration not specified)
http://nptel.ac.in/img/logo/Image-05.jpg (expiration not specified)
http://nptel.ac.in/img/logo/industry_logo.jpg (expiration not specified)
http://nptel.ac.in/js/lightslider.js (expiration not specified)
http://nptel.ac.in/newstyles/css/bootstrap.3.3.4.css (expiration not specified)
http://nptel.ac.in/newstyles/css/footer.css (expiration not specified)
http://nptel.ac.in/newstyles/css/style.css (expiration not specified)
http://nptel.ac.in/newstyles/images/btt.png (expiration not specified)
http://nptel.ac.in/newstyles/images/cc.png (expiration not specified)
http://nptel.ac.in/newstyles/images/iit-logos/iisbangalore.png (expiration not specified)
http://nptel.ac.in/newstyles/images/iit-logos/iitbombay.png (expiration not specified)
http://nptel.ac.in/newstyles/images/iit-logos/iitdelhi.png (expiration not specified)
http://nptel.ac.in/newstyles/images/iit-logos/iitguwahati.png (expiration not specified)
http://nptel.ac.in/newstyles/images/iit-logos/iitkanpur.png (expiration not specified)
http://nptel.ac.in/newstyles/images/iit-logos/iitkharagpur.png (expiration not specified)
http://nptel.ac.in/newstyles/images/iit-logos/iitmadras.png (expiration not specified)
http://nptel.ac.in/newstyles/images/iit-logos/iitroorkee.png (expiration not specified)
http://nptel.ac.in/newstyles/images/iit-logos/nptel-logo.png (expiration not specified)
http://nptel.ac.in/newstyles/js/bootstrap.3.3.4.js (expiration not specified)
http://nptel.ac.in/newstyles/js/jquery.1.10.2.js (expiration not specified)
http://nptel.ac.in/newstyles/js/script.js (expiration not specified)
https://static.doubleclick.net/instream/ad_status.js (15 minutes)
priority - 4 Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 43.5KiB (47% reduction).
Minifying http://nptel.ac.in/newstyles/js/script.js could save 2.1KiB (36% reduction) after compression.
Minifying http://nptel.ac.in/js/lightslider.js could save 1.6KiB (24% reduction) after compression.
priority - 0 Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 3.4KiB (32% reduction).
priority - 0 Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 1.5KiB (21% reduction).
Minifying http://nptel.ac.in/css/lightslider.css could save 295B (19% reduction) after compression.
Minifying http://nptel.ac.in/newstyles/css/footer.css could save 123B (51% reduction) after compression.
nptel.ac.in Mobile Resource Breakdown
| Total Resources | 65 |
| Number of Hosts | 12 |
| Static Resources | 50 |
| JavaScript Resources | 12 |
| CSS Resources | 13 |
nptel.ac.in mobile page usability
Last tested: 2018-02-08
nptel.ac.in Mobile Usability Test Quick Summary
priority - 26 Size content to viewport
The page content is too wide for the viewport, forcing the user to scroll horizontally. Size the page content to the viewport to provide a better user experience.
The page content is 645 CSS pixels wide, but the viewport is only 412 CSS pixels wide. The following elements fall outside the viewport:
<div class="alert featuretitle">Jan to June 20…course booklet</div> falls outside the viewport.The element
<img src="images/booklet_18/001.jpg"> falls outside the viewport.priority - 5 Size 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.
<a href="https://www.fa….com/NPTELNoc/">Facebook</a> and 4 others are close to other tap targets.<button type="button" class="navbar-toggle collapsed">Toggle navigation</button> is close to 3 other tap targets.<a href="http://nptel.ac.in/" class="navbar-brand"></a> is close to 1 other tap targets.<a href="https://online…ac.in/explorer"></a> is close to 2 other tap targets.<a href="https://online…ac.in/explorer"></a> is close to 2 other tap targets.<div id="player_uid_194268938_1" class="html5-video-pl…ytp-small-mode">1/2NPTEL Highl…y again later.</div> is close to 4 other tap targets.<button class="ytp-playlist-m…ton ytp-button">1/2</button> is close to 4 other tap targets.<div id="testimonial-slider" class="owl-carousel owl-theme">Architectural…4 Weeks</div> is close to 2 other tap targets.<a id="course_modal" href="https://online…8_ar04/preview">Architectural…8 Weeks</a> is close to 2 other tap targets.<div class="modal-dialog">×…M IS NOW OPEN!</div> is close to 3 other tap targets.<div class="modal-dialog">×…M IS NOW OPEN!</div> and 2 others are close to other tap targets.<button type="button" class="close">×</button> is close to 1 other tap targets.<button type="button" class="close">×</button> is close to 1 other tap targets.<a href="http://www.iitb.ac.in/"></a> and 3 others are close to other tap targets.The tap target
<a href="http://nptel.a…gate_paper.php"></a> and 5 others are close to other tap targets.nptel.ac.in Mobile Resource Breakdown
| Total Resources | 65 |
| Number of Hosts | 12 |
| Static Resources | 50 |
| JavaScript Resources | 12 |
| CSS Resources | 13 |
nptel.ac.in HTML validation
Errors
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
"...href="./"><img src="./newstyles/images/iit-logos/nptel-logo.png" class="img-responsive nptellogo"></a> ..." Line: 265 Column: 7 - 117
"...k"> <img href="http://nptel.ac.in/img/Video_felicitation.mp4" target="_blank" src="img/award3.jpg" class="owl-img"></a> ..." Line: 309 Column: 84 - 140
"...="_blank"><img src="/images/Popup-02.jpg" width="550" height="300"></a> ..."
End tag “nav” seen, but there were open elements.
"...e --> </nav> <lin..."
Unclosed element “div”.
"...e"> <div class="head-container navcontrol"> ..."
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
"...ript> --> <style> .blin..."
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
"......"
The element “iframe” must not appear as a descendant of the “a” element.
"......"
Attribute “href” not allowed on element “img” at this point.
"...k"> <img href="http://nptel.ac.in/img/Video_felicitation.mp4" target="_blank" src="img/award3.jpg" class="owl-img"></a> ..."
Attribute “target” not allowed on element “img” at this point.
"...k"> <img href="http://nptel.ac.in/img/Video_felicitation.mp4" target="_blank" src="img/award3.jpg" class="owl-img"></a> ..."
Element “center” not allowed as child of element “h4” in this context. (Suppressing further errors from this subtree.)
"...t:bold;"><center>TENTATI..." Line: 311 Column: 225 - 232
"...t:bold;" ><center>Track ..."
The “center” element is obsolete. Use CSS instead.
"...t:bold;"><center>TENTATI..." Line: 311 Column: 225 - 232
"...t:bold;" ><center>Track ..."
Stray end tag “font”.
"...!</center></font></a> <..."
End tag “a” violates nesting rules.
"...er></font></a> </h4>..."
Cannot recover after last error. Any further errors will be ignored.
"...er></font></a> </h4>..."
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nptel.ac.in 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.
nptel.ac.in 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.