XUETANGX.COM 学堂在线-国家精品课程在线学习平台

xuetangx.com Website Information

Daily Unique Visits: 232,438

Daily Page Views: 1,859,504

Income Per Day: $1,860

Estimated Value: $2,008,800

xuetangx.com is registered under .COM top-level domain. Please check other sites in .COM zone.

No name server records were found.

and is probably hosted by BJ-GUANGHUAN-AP Beijing Guanghuan Xinwang Digital, CN. See the full list of other websites hosted by BJ-GUANGHUAN-AP Beijing Guanghuan Xinwang Digital, CN.

The highest website xuetangx.com position in Alexa rank database was 1356 and the lowest rank position was 820396. Current position of xuetangx.com in Alexa rank database is 6556.

Desktop speed score of xuetangx.com (4/100) is better than the results of 0.51% of other sites and shows that the page desktop performance can be improved.

Mobile usability score of xuetangx.com (98/100) is better than the results of 55.61% of other sites and means that the page is mobile-friendly.

Mobile speed score of xuetangx.com (16/100) is better than the results of 3.07% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

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xuetangx.com 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.


xuetangx.com 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.


Domain Name: XUETANGX.COM
Registry Domain ID: 1826770928_DOMAIN_COM-VRSN
Registrar WHOIS Server: grs-whois.hichina.com
Registrar URL: http://www.net.cn
Updated Date: 2019-12-11T03:00:47Z
Creation Date: 2013-09-10T01:13:30Z
Registry Expiry Date: 2022-09-10T01:13:30Z
Registrar: Alibaba Cloud Computing (Beijing) Co., Ltd.
Registrar IANA ID: 420
Registrar Abuse Contact Email: DomainAbuse@service.aliyun.com
Registrar Abuse Contact Phone: +86.95187
Domain Status: ok https://icann.org/epp#ok
Name Server: NS3.DNSV4.COM
Name Server: NS4.DNSV4.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2021-04-25T10:33:30Z

xuetangx.com server information

Servers Location

xuetangx.com desktop page speed rank

Last tested: 2019-12-07


Desktop Speed Bad
4/100

xuetangx.com Desktop Speed Test Quick Summary


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priority - 196Enable compression

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priority - 14Eliminate render-blocking JavaScript and CSS in above-the-fold content

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priority - 12Leverage browser caching

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priority - 9Avoid landing page redirects

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priority - 2Prioritize visible content

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priority - 0Minify HTML

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xuetangx.com Desktop Resource Breakdown

Total Resources109
Number of Hosts11
Static Resources93
JavaScript Resources26
CSS Resources1

xuetangx.com mobile page speed rank

Last tested: 2019-12-07


Mobile Speed Bad
16/100

xuetangx.com Mobile Speed Test Quick Summary


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priority - 75Enable compression

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priority - 56Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 5 blocking script resources and 1 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

https://s.xuetangx.com/resource/mathjax/MathJax.js…-MML-AM_HTMLorMML-full
https://res.wx.qq.com/open/js/jweixin-1.2.0.js
https://next.xuetangx.com/resources/js/manifest_29df210edfe5bfa849d7.js
https://next.xuetangx.com/resources/js/vendor_e306a4a34367fe1f701c.js
https://next.xuetangx.com/resources/js/app_c5f9822ab505d7ffe577.js

Optimize CSS Delivery of the following:

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priority - 34Avoid 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.

http://xuetangx.com/
http://www.xuetangx.com/
https://next.xuetangx.com/

priority - 17Leverage 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://storage.xuetangx.com/public_assets/xuetangx…9F%9F%E5%90%8Dlogo.png (expiration not specified)
http://storage.xuetangx.com/public_assets/xuetangx…059f0313a.bg_about.png (expiration not specified)
https://next.xuetangx.com/api/v1/lms/home/banners/ (expiration not specified)
https://next.xuetangx.com/api/v1/lms/home/institution_recommend/ (expiration not specified)
https://next.xuetangx.com/api/v1/lms/home/module_management/ (expiration not specified)
https://next.xuetangx.com/api/v1/lms/home/navigation/configuration/ (expiration not specified)
https://next.xuetangx.com/api/v1/lms/home/partner/ (expiration not specified)
https://next.xuetangx.com/api/v1/lms/home/user_voice/ (expiration not specified)
https://next.xuetangx.com/api/v1/lms/service/weixin_parameter (expiration not specified)
https://next.xuetangx.com/api/v1/u/login/check_is_l/ (expiration not specified)
https://next.xuetangx.com/resources/css/app.4fcbd3…dc8cfa1eba0892206b.css (expiration not specified)
https://next.xuetangx.com/resources/fonts/iconfont.c7c1147.woff (expiration not specified)
https://next.xuetangx.com/resources/img/qrcode.6dbfa4d.png (expiration not specified)
https://next.xuetangx.com/resources/js/0_c45fb1ba42cb66793230.js (expiration not specified)
https://next.xuetangx.com/resources/js/17_6773f81877ee5f951a1f.js (expiration not specified)
https://next.xuetangx.com/resources/js/app_c5f9822ab505d7ffe577.js (expiration not specified)
https://next.xuetangx.com/resources/js/manifest_29df210edfe5bfa849d7.js (expiration not specified)
https://next.xuetangx.com/resources/js/vendor_e306a4a34367fe1f701c.js (expiration not specified)
https://storagecdn.xuetangx.com/public_assets/xuet…ngX/qinghua_logo_c.png (expiration not specified)
https://storagecdn.xuetangx.com/public_assets/xuet…5cb6d0.mobile-logo.png (expiration not specified)
https://storagecdn.xuetangx.com/public_assets/xuet…68fc7.icon_about_2.png (expiration not specified)
https://storagecdn.xuetangx.com/public_assets/xuet…63238.icon_about_1.png (expiration not specified)
https://storagecdn.xuetangx.com/public_assets/xuet…a2b09.icon_about_3.png (expiration not specified)

priority - 8Prioritize visible content

Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.

The entire HTML response was not sufficient to render the above-the-fold content. This usually indicates that additional resources, loaded after HTML parsing, were required to render above-the-fold content. Prioritize visible content that is needed for rendering above-the-fold by including it directly in the HTML response.

None of the final above-the-fold content could be rendered even with the full HTML response.

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 154B (12% reduction).

Minifying https://next.xuetangx.com/ could save 154B (12% reduction) after compression.

xuetangx.com Mobile Resource Breakdown

Total Resources101
Number of Hosts8
Static Resources85
JavaScript Resources25
CSS Resources1

xuetangx.com mobile page usability

Last tested: 2019-12-07


Mobile Usability Good
98/100

xuetangx.com Mobile Usability Test Quick Summary


priority - 1Size 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 <li class="el-carousel__i…ator is-active"></li> and 6 others are close to other tap targets.

The tap target <button class="el-carousel__button"></button> is close to 1 other tap targets.

The tap target <button class="el-carousel__button"></button> and 5 others are close to other tap targets.

The tap target <div class="swiper-button-next"></div> is close to 1 other tap targets.
The tap target <a href="https://storag…yright/icp.pdf">京ICP证140571号</a> is close to 1 other tap targets.

xuetangx.com HTML validation

Errors

Attribute “xmlns:wb” not allowed here.

Line: 4 Column: 16 - 55
"...TYPE html> <html lang="zh-cn" xmlns:wb="http://open.weibo.com/wb"> <head..."

A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.

Line: 13 Column: 5 - 56
"...t=8"> <meta http-equiv="X-UA-Compatible" content="edge" /> ..."

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

Line: 162 Column: 5 - 109
"... cf"> <img class="ajax_loading" src="//storagecdn.xuetangx.com/static/images/alert/loading.06c954eb64c3.gif" /> </..." Line: 183 Column: 204 - 306
"...="BANNER"><img src="//storagecdn.xuetangx.com/public_assets/xuetangx/course_introduction/20190130180644374104" /></a></..." Line: 184 Column: 249 - 351
"...="BANNER"><img src="//storagecdn.xuetangx.com/public_assets/xuetangx/course_introduction/20190219181400459909" /></a></..." Line: 185 Column: 228 - 330
"...="BANNER"><img src="//storagecdn.xuetangx.com/public_assets/xuetangx/course_introduction/20190131144609738712" /></a></..." Line: 186 Column: 246 - 348
"...="BANNER"><img src="//storagecdn.xuetangx.com/public_assets/xuetangx/course_introduction/20190121184235127989" /></a></..." Line: 187 Column: 225 - 327
"...="BANNER"><img src="//storagecdn.xuetangx.com/public_assets/xuetangx/course_introduction/20190111175214351850" /></a></..." Line: 188 Column: 218 - 320
"...="BANNER"><img src="//storagecdn.xuetangx.com/public_assets/xuetangx/course_introduction/20190121103105465769" /></a></..." Line: 189 Column: 246 - 348
"...="BANNER"><img src="//storagecdn.xuetangx.com/public_assets/xuetangx/course_introduction/20190114113736155939" /></a></..." Line: 190 Column: 246 - 348
"...="BANNER"><img src="//storagecdn.xuetangx.com/public_assets/xuetangx/course_introduction/20181225103702210584" /></a></..." Line: 268 Column: 62 - 137
"...="_blank"><img src="http://www.xuetangx.com/static/images/edx_logo.262fca70a49b.png"/></a> ..."

Warnings

Attribute with the local name “xmlns:wb” is not serializable as XML 1.0.

Line: 4 Column: 16 - 55
"...TYPE html> <html lang="zh-cn" xmlns:wb="http://open.weibo.com/wb"> <head..."

Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.

Line: 194 Column: 2 - 34
"... </div> <section id="banner_school_wrap"> <di..." Line: 198 Column: 2 - 33
"...section> <section id="elite_school_wrap"> </s..." Line: 201 Column: 2 - 32
"...section> <section id="live_course_wrap"> </s..." Line: 204 Column: 2 - 34
"...section> <section id="training_camp_wrap"> </s..." Line: 207 Column: 2 - 33
"...section> <section id="tdxl_gjkcyxb_wrap"> ..." Line: 210 Column: 2 - 32
"...section> <section id="tiny_degree_wrap"> ..." Line: 213 Column: 2 - 41
"...section> <section id="best_selling_courses_wrap"> ..." Line: 216 Column: 2 - 30
"...section> <section id="xksd_sdhk_wrap"> ..." Line: 219 Column: 2 - 32
"...section> <section id="self_course_wrap"> </s..." Line: 222 Column: 2 - 24
"...section> <section id="cap_wrap"> ..." Line: 225 Column: 2 - 35
"...section> <section id="hot_knowledge_point"> </s..." Line: 228 Column: 2 - 28
"...section> <section id="xt_news_wrap"> </s..." Line: 231 Column: 2 - 32
"...section> <section id="cooperation_wrap"> </s..."

The “type” attribute is unnecessary for JavaScript resources.

Line: 323 Column: 5 - 105
"...ript> <script type="text/javascript" src="http://storagecdn.xuetangx.com/xuetangx/js/statistics_footer.js"></scri..."

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xuetangx.com 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.


xuetangx.com 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.