stepik.org Website Information
Daily Unique Visits: 70,907
Daily Page Views: 425,442
Income Per Day: $851
Estimated Value: $612,720
This website is located in Netherlands and is using following IP address 13.69.75.239. See the complete list of popular websites hosted in Netherlands.
stepik.org is registered under .ORG top-level domain. Please check other sites in .ORG zone.
Website stepik.org is using the following name servers:
- ns78.domaincontrol.com
- ns77.domaincontrol.com
and is probably hosted by HLL LLC. See the full list of other websites hosted by HLL LLC.
The highest website stepik.org position in Alexa rank database was 20006 and the lowest rank position was 23333. Current position of stepik.org in Alexa rank database is 20227.
Desktop speed score of stepik.org (66/100) is better than the results of 44.37% of other sites and shows that the page desktop performance can be improved.
Mobile usability score of stepik.org (100/100) is better than the results of 100% of other sites and means that the page is mobile-friendly.
Mobile speed score of stepik.org (53/100) is better than the results of 39.51% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
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stepik.org 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.
stepik.org whois
WHOIS gives you the ability to lookup any generic domains to find out the registered domain holder. WHOIS database are provided for information purposes only. It allows the public to check whether a specific domain name is still available or not and to obtain information related to the registration records of existing domain names.
Registry Domain ID: f3edbb1b716d47eab534e83128ccc245-LROR
Registrar WHOIS Server: http://whois.godaddy.com
Registrar URL: http://www.whois.godaddy.com
Updated Date: 2022-09-14T19:50:53Z
Creation Date: 2013-08-29T18:28:17Z
Registry Expiry Date: 2023-08-29T18:28:17Z
Registrar: GoDaddy.com, LLC
Registrar IANA ID: 146
Registrar Abuse Contact Email: abuse@godaddy.com
Registrar Abuse Contact Phone: +1.4806242505
Domain Status: clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited
Domain Status: clientRenewProhibited https://icann.org/epp#clientRenewProhibited
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Registry Registrant ID: REDACTED FOR PRIVACY
Registrant Name: REDACTED FOR PRIVACY
Registrant Organization: Domains By Proxy, LLC
Registrant Street: REDACTED FOR PRIVACY
Registrant City: REDACTED FOR PRIVACY
Registrant State/Province: Arizona
Registrant Postal Code: REDACTED FOR PRIVACY
Registrant Country: US
Registrant Phone: REDACTED FOR PRIVACY
Registrant Phone Ext: REDACTED FOR PRIVACY
Registrant Fax: REDACTED FOR PRIVACY
Registrant Fax Ext: REDACTED FOR PRIVACY
Registrant Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Registry Admin ID: REDACTED FOR PRIVACY
Admin Name: REDACTED FOR PRIVACY
Admin Organization: REDACTED FOR PRIVACY
Admin Street: REDACTED FOR PRIVACY
Admin City: REDACTED FOR PRIVACY
Admin State/Province: REDACTED FOR PRIVACY
Admin Postal Code: REDACTED FOR PRIVACY
Admin Country: REDACTED FOR PRIVACY
Admin Phone: REDACTED FOR PRIVACY
Admin Phone Ext: REDACTED FOR PRIVACY
Admin Fax: REDACTED FOR PRIVACY
Admin Fax Ext: REDACTED FOR PRIVACY
Admin Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Registry Tech ID: REDACTED FOR PRIVACY
Tech Name: REDACTED FOR PRIVACY
Tech Organization: REDACTED FOR PRIVACY
Tech Street: REDACTED FOR PRIVACY
Tech City: REDACTED FOR PRIVACY
Tech State/Province: REDACTED FOR PRIVACY
Tech Postal Code: REDACTED FOR PRIVACY
Tech Country: REDACTED FOR PRIVACY
Tech Phone: REDACTED FOR PRIVACY
Tech Phone Ext: REDACTED FOR PRIVACY
Tech Fax: REDACTED FOR PRIVACY
Tech Fax Ext: REDACTED FOR PRIVACY
Tech Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Name Server: ns77.domaincontrol.com
Name Server: ns78.domaincontrol.com
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2022-10-31T18:31:06Z
stepik.org server information
Servers Location
stepik.org desktop page speed rank
Last tested: 2018-02-14
stepik.org Desktop Speed Test Quick Summary
priority - 18Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 7 blocking script resources and 7 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
https://static.tildacdn.com/js/tilda-scripts-2.8.min.js
https://tilda.ws/project78514/tilda-blocks-2.7.js?t=1518592504
https://static.tildacdn.com/js/tilda-animation-1.0.min.js
https://static.tildacdn.com/js/tilda-slds-1.4.min.js
https://static.tildacdn.com/js/hammer.min.js
https://static.tildacdn.com/js/tilda-zoom-2.0.min.js
Optimize CSS Delivery of the following:
https://tilda.ws/project78514/tilda-blocks-2.12.css?t=1518592504
https://fonts.googleapis.com/css?family=Open+Sans:…&subset=latin,cyrillic
https://fonts.googleapis.com/css?family=Roboto:300…&subset=latin,cyrillic
https://static.tildacdn.com/css/tilda-animation-1.0.min.css
https://static.tildacdn.com/css/tilda-slds-1.4.min.css
https://static.tildacdn.com/css/tilda-zoom-2.0.min.css
priority - 13Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 131.3KiB (44% reduction).
Compressing and resizing https://static.tildacdn.com/tild6534-3363-4936-b46…00pxAutonome_Unive.png could save 55KiB (89% reduction).
Compressing and resizing https://static.tildacdn.com/tild3533-6437-4834-b33…googleplaybadge_en.png could save 8KiB (58% reduction).
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Compressing and resizing https://static.tildacdn.com/tild6132-6235-4335-b46…/TU_Delft_logo_RGB.png could save 2KiB (45% reduction).
priority - 10Enable compression
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 94.2KiB (47% reduction).
Compressing https://static.tildacdn.com/tild3633-3966-4436-b437-353638643862/C032.svg could save 16.6KiB (28% reduction).
Compressing https://static.tildacdn.com/tild3835-3430-4162-a26…wnload_on_the_App_.svg could save 7.5KiB (62% reduction).
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Compressing https://static.tildacdn.com/tild3435-3661-4636-b96…383234/Artboard_11.svg could save 6KiB (32% reduction).
Compressing https://static.tildacdn.com/tild3365-3864-4036-b738-353565656365/101.svg could save 5.6KiB (74% reduction).
Compressing https://static.tildacdn.com/tild3234-3735-4338-a53…/Artboard_1_copy_4.svg could save 3.8KiB (74% reduction).
Compressing https://static.tildacdn.com/tild3364-3736-4632-a16…epik_logotype_whit.svg could save 2.9KiB (53% reduction).
Compressing https://static.tildacdn.com/tild3932-3030-4636-a46…623133/Artboard_10.svg could save 2.8KiB (69% reduction).
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Compressing https://static.tildacdn.com/tild6537-3765-4337-b26…/Artboard_1_copy_3.svg could save 2.1KiB (70% reduction).
Compressing https://static.tildacdn.com/tild3665-3264-4463-a239-356664383764/A07.svg could save 1.5KiB (61% reduction).
Compressing https://static.tildacdn.com/tild6165-3634-4638-b239-333365303466/C042.svg could save 1.5KiB (63% reduction).
Compressing https://static.tildacdn.com/tild3137-6630-4135-a637-363739373438/A13.svg could save 1.2KiB (65% reduction).
Compressing https://static.tildacdn.com/tild3136-3539-4563-b431-363130636566/A11.svg could save 556B (50% reduction).
Compressing https://static.tildacdn.com/tild3831-6161-4666-b039-623238373638/A12.svg could save 339B (43% reduction).
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priority - 9Avoid landing page redirects
Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
https://stepik.org/
https://welcome.stepik.org/en
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://www.googletagmanager.com/gtm.js?id=GTM-5JHP62K (15 minutes)
https://cjs.ptengine.com/pts.js (60 minutes)
https://d31j93rd8oukbv.cloudfront.net/metrika/watch_ua.js (60 minutes)
https://js.ptengine.com/ptd.js (60 minutes)
https://www.google-analytics.com/analytics.js (2 hours)
priority - 0Minify 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 3.3KiB (17% reduction).
priority - 0Minify 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 1.8KiB (15% reduction).
stepik.org Desktop Resource Breakdown
Total Resources | 66 |
Number of Hosts | 17 |
Static Resources | 46 |
JavaScript Resources | 16 |
CSS Resources | 7 |
stepik.org mobile page speed rank
Last tested: 2017-06-04
stepik.org Mobile Speed Test Quick Summary
priority - 64Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 6 blocking script resources and 5 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
http://static.tildacdn.com/js/tilda-scripts-2.8.min.js
http://tilda.ws/project78514/tilda-blocks-2.6.js?t=1493223343
http://static.tildacdn.com/js/tilda-zoom-1.0.min.js
http://static.tildacdn.com/js/bootstrap.min.js
http://static.tildacdn.com/js/lazyload-1.3.min.js
Optimize CSS Delivery of the following:
http://tilda.ws/project78514/tilda-blocks-2.11.css?t=1493223343
https://fonts.googleapis.com/css?family=Open+Sans:…&subset=latin,cyrillic
https://fonts.googleapis.com/css?family=Roboto:300…&subset=latin,cyrillic
http://static.tildacdn.com/css/tilda-zoom-1.0.min.css
priority - 26Avoid landing page redirects
Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
https://stepik.org/
http://welcome.stepik.org/
priority - 4Leverage 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://cjs.ptengine.com/61e3991a.js (60 minutes)
http://cjs.ptengine.com/pta_en.js (60 minutes)
http://cjs.ptengine.com/pts.js (60 minutes)
https://mc.yandex.ru/metrika/watch.js (60 minutes)
https://www.google-analytics.com/analytics.js (2 hours)
priority - 1Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 10.8KiB (18% reduction).
Compressing http://static.tildacdn.com/img/aboutSliderControls_white.png could save 831B (52% reduction).
priority - 0Enable compression
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 2KiB (65% reduction).
Compressing http://cjs.ptengine.com/pta_en.js could save 527B (54% reduction).
stepik.org Mobile Resource Breakdown
Total Resources | 50 |
Number of Hosts | 13 |
Static Resources | 9 |
JavaScript Resources | 13 |
CSS Resources | 5 |
stepik.org mobile page usability
Last tested: 2017-06-04
stepik.org HTML validation
Errors
A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.
"..."utf-8" /><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><meta ..."
Bad value “x-dns-prefetch-control” for attribute “http-equiv” on element “meta”.
"...one=no" /><meta http-equiv="x-dns-prefetch-control" content="on"><link ..."
Attribute “imgfield” not allowed on element “img” at this point.
"...o';"><img src="https://static.tildacdn.com/tild6535-6233-4332-a236-323438386233/klogotype.png" class="t228__imglogo t228__imglogomobile" imgfield="img" style="max-width: 180px;width: 180px; height: auto; display: block;" alt=""></a> <..." Line: 9 Column: 4991 - 5210
"...'_blank'> <img class="t-img" src="https://static.tildacdn.com/tild3835-3535-4435-a332-656233303738/-/empty/gl1logo.png" data-original="https://static.tildacdn.com/tild3835-3535-4435-a332-656233303738/gl1logo.png" imgfield="img" /> </a> ..." Line: 9 Column: 5340 - 5578
"...'_blank'> <img class="t-img" src="https://static.tildacdn.com/tild3030-3563-4664-b664-393835396231/-/empty/logo_JetBrains_1.png" data-original="https://static.tildacdn.com/tild3030-3563-4664-b664-393835396231/logo_JetBrains_1.png" imgfield="img2" /> </a> ..." Line: 9 Column: 5709 - 5949
"...'_blank'> <img class="t-img" src="https://static.tildacdn.com/tild3834-3066-4762-b561-623330636365/-/empty/TU_Delft_logo_RGB.png" data-original="https://static.tildacdn.com/tild3834-3066-4762-b561-623330636365/TU_Delft_logo_RGB.png" imgfield="img3" /> </a> ..." Line: 9 Column: 6129 - 6375
"...'_blank'> <img class="t-img" src="https://static.tildacdn.com/tild6135-3337-4433-b465-373738336239/-/empty/1200pxAutonome_Unive.png" data-original="https://static.tildacdn.com/tild6135-3337-4433-b465-373738336239/1200pxAutonome_Unive.png" imgfield="img4" /> </a> ..." Line: 9 Column: 6507 - 6753
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"...wrapper"> <img class="t160__img t-img" src="https://static.tildacdn.com/tild3465-3730-4734-b739-653939383461/-/empty/dmitryev.png" data-original="https://static.tildacdn.com/tild3465-3730-4734-b739-653939383461/dmitryev.png" imgfield="img3" alt=""> <div ..." Line: 9 Column: 11111 - 11360
"...wrapper"> <img class="t160__img t-img" src="https://static.tildacdn.com/tild6238-3237-4364-b234-326564313033/-/empty/Sonia_Casillas.png" data-original="https://static.tildacdn.com/tild6238-3237-4364-b234-326564313033/Sonia_Casillas.png" imgfield="img4" alt=""> <div ..." Line: 9 Column: 12524 - 12751
"...wrapper"> <img class="t160__img t-img" src="https://static.tildacdn.com/tild3637-3635-4037-a362-366333646461/-/empty/mc.jpeg" data-original="https://static.tildacdn.com/tild3637-3635-4037-a362-366333646461/mc.jpeg" imgfield="img5" alt=""> <div ..."
Bad value “” for attribute “target” on element “a”: Browsing context name must be at least one character long.
"...tons_but"><a href="https://stepik.org/login?next=%2Fexplore%2Fcourses" target="" class="t-btn " style="color:#ffffff;background-color:#66cc66;border-radius:5px; -moz-border-radius:5px; -webkit-border-radius:5px;"><table..." Line: 9 Column: 1851 - 2032
"...p:60px;"> <a href="https://stepik.org/new-course" target="" class="t-btn " style="color:#ffffff;background-color:#66cc66;border-radius:5px; -moz-border-radius:5px; -webkit-border-radius:5px;"><table..." Line: 9 Column: 2111 - 2300
"...able></a> <a href="mailto:anastasia.samsonova@stepik.org" target="" class="t-btn " style="color:#000000;background-color:#e0e0e0;border-radius:5px; -moz-border-radius:5px; -webkit-border-radius:5px;"><table..." Line: 10 Column: 3722 - 3903
"...wraptwo"> <a href="https://stepik.org/new-course" target="" class="t-btn " style="color:#ffffff;background-color:#66cc66;border-radius:5px; -moz-border-radius:5px; -webkit-border-radius:5px;"><table..."
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
"...div></div><style>@media..." Line: 9 Column: 13933 - 13939
"...- T396 --><style>#rec35..."
Attribute “bgimgfield” not allowed on element “div” at this point.
"... cover --><div class="t-cover" id="recorddiv35662957" bgimgfield="img" style="height:80vh; background-image:url('https://static.tildacdn.com/tild6364-3061-4433-a534-613831613435/-/resize/20x/100_1.jpg');" ><div c..."
Attribute “field” not allowed on element “div” at this point.
"...wrapper"> <div class="t181__title t-title t-title_md" style="" field="title"><span ..." Line: 9 Column: 1575 - 1654
"...an></div> <div class="t181__descr t-descr t-descr_lg t-opacity_70" style="" field="descr">Cloud-..." Line: 9 Column: 2813 - 2858
"...xtclass1"><div class="t075__title t-name" field="title"><span ..." Line: 9 Column: 2937 - 2970
"...pan></div><div class="t-text" field="descr">You ca..." Line: 9 Column: 3208 - 3254
"...xtclass1"><div class="t075__title t-name" field="title2"><span ..." Line: 9 Column: 3329 - 3363
"...pan></div><div class="t-text" field="descr2">Auto g..." Line: 9 Column: 3592 - 3638
"...xtclass1"><div class="t075__title t-name" field="title3"><div s..." Line: 9 Column: 3860 - 3894
"...div></div><div class="t-text" field="descr3"><div s..." Line: 9 Column: 4393 - 4460
"...refix_1"> <div class="t017__title t-title t-title_xxs" field="title" style=""><div s..." Line: 9 Column: 7991 - 8035
"..." alt=""> <div field="text" class="t160__text t-descr"><div s..." Line: 9 Column: 8452 - 8507
"...iv></div> <div class="t160__title t-name t-name_lg" field="title"><div s..." Line: 9 Column: 8585 - 8643
"...iv></div> <div field="descr" class="t160__descr t-descr t-descr_xxs"><div s..." Line: 9 Column: 9175 - 9220
"..." alt=""> <div field="text2" class="t160__text t-descr"><div s..." Line: 9 Column: 9670 - 9726
"...iv></div> <div class="t160__title t-name t-name_lg" field="title2"><div s..." Line: 9 Column: 9806 - 9865
"...iv></div> <div field="descr2" class="t160__descr t-descr t-descr_xxs"><div s..." Line: 9 Column: 10371 - 10416
"..." alt=""> <div field="text3" class="t160__text t-descr"><div s..." Line: 9 Column: 10672 - 10728
"...iv></div> <div class="t160__title t-name t-name_lg" field="title3"><div s..." Line: 9 Column: 10808 - 10867
"...iv></div> <div field="descr3" class="t160__descr t-descr t-descr_xxs"><div s..." Line: 9 Column: 11362 - 11407
"..." alt=""> <div field="text4" class="t160__text t-descr"><div s..." Line: 9 Column: 12024 - 12080
"...iv></div> <div class="t160__title t-name t-name_lg" field="title4"><div s..." Line: 9 Column: 12165 - 12224
"...iv></div> <div field="descr4" class="t160__descr t-descr t-descr_xxs"><div s..." Line: 9 Column: 12753 - 12798
"..." alt=""> <div field="text5" class="t160__text t-descr"><div s..." Line: 9 Column: 13145 - 13201
"...iv></div> <div class="t160__title t-name t-name_lg" field="title5"><div s..." Line: 9 Column: 13277 - 13336
"...iv></div> <div field="descr5" class="t160__descr t-descr t-descr_xxs"><div s..." Line: 9 Column: 33258 - 33309
"...alue="" > <div class='tn-atom' field='tn_text_1471536886303' ><span ..." Line: 9 Column: 34062 - 34113
"...alue="" > <div class='tn-atom' field='tn_text_1471537427885' ><span ..." Line: 9 Column: 34865 - 34916
"...alue="" > <div class='tn-atom' field='tn_text_1471537487659' ><span ..." Line: 9 Column: 35671 - 35722
"...alue="" > <div class='tn-atom' field='tn_text_1471537581134' ><span ..." Line: 9 Column: 37245 - 37296
"...alue="" > <div class='tn-atom' field='tn_text_1471537657023' >No pri..." Line: 9 Column: 38861 - 38912
"...alue="" > <div class='tn-atom' field='tn_text_1471537943205' ><span ..." Line: 9 Column: 39668 - 39719
"...alue="" > <div class='tn-atom' field='tn_text_1471537943212' ><span ..." Line: 9 Column: 40472 - 40523
"...alue="" > <div class='tn-atom' field='tn_text_1471537943217' ><span ..." Line: 9 Column: 41280 - 41331
"...alue="" > <div class='tn-atom' field='tn_text_1471537943225' ><span ..." Line: 9 Column: 42858 - 42909
"...alue="" > <div class='tn-atom' field='tn_text_1471537943240' >1 priv..." Line: 9 Column: 45306 - 45357
"...alue="" > <div class='tn-atom' field='tn_text_1471537956213' ><span ..." Line: 9 Column: 46113 - 46164
"...alue="" > <div class='tn-atom' field='tn_text_1471537956219' ><span ..." Line: 9 Column: 46919 - 46970
"...alue="" > <div class='tn-atom' field='tn_text_1471537956225' ><span ..." Line: 9 Column: 47730 - 47781
"...alue="" > <div class='tn-atom' field='tn_text_1471537956230' ><span ..." Line: 9 Column: 49310 - 49361
"...alue="" > <div class='tn-atom' field='tn_text_1471537956244' ><span ..." Line: 9 Column: 51795 - 51846
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"...alue="" > <div class='tn-atom' field='tn_text_1471537966515' ><br></..." Line: 9 Column: 53379 - 53430
"...alue="" > <div class='tn-atom' field='tn_text_1471537966519' ><br></..." Line: 9 Column: 54149 - 54200
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stepik.org 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.
stepik.org 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.