DENTIST.ORG.CN 北京口腔医院


dentist.org.cn website information.

dentist.org.cn domain name is registered by .CN top-level domain registry. See the other sites registred in .CN domain zone.

Following name servers are specified for dentist.org.cn domain:

  • dns26.hichina.com
  • dns25.hichina.com

and probably website dentist.org.cn is hosted by GOOGLE-PRIVATE-CLOUD - Google LLC, US web hosting company. Check the complete list of other most popular websites hosted by GOOGLE-PRIVATE-CLOUD - Google LLC, US hosting company.

According to Alexa traffic rank the highest website dentist.org.cn position was 13326 (in the world). The lowest Alexa rank position was 989801. Now website dentist.org.cn ranked in Alexa database as number 827840 (in the world).

Website dentist.org.cn Desktop speed measurement score (85/100) is better than the results of 80% of other sites and shows that the page is performing great on desktop computers.

dentist.org.cn Mobile usability score (59/100) is better than the results of 2.69% of other sites and shows that the page mobile usability is poor and can be improved.

Mobile speed measurement score of dentist.org.cn (60/100) is better than the results of 54.7% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

Weekly Rank Report

DateRankChange
Nov-17-2024 827,8407,339
Nov-16-2024 835,179-25,904
Nov-15-2024 809,27513,232
Nov-14-2024 822,507-40,484
Nov-13-2024 782,0230
Nov-12-2024 782,0230
Nov-11-2024 782,0230

Advertisement

dentist.org.cn Rank History

Alexa can identify the popularity of a website as well as its competitors. It is important for website owners and bloggers to know their Alexa ranking because it shows how many visitors have viewed their web page. It gives them a clear idea of how popular their website is on the internet and the ranking of their competitors.



dentist.org.cn whois

WHOIS is a query and response protocol that is widely used for querying databases that store the registered users or assignees of an Internet resource, such as a domain name, an IP address block, or an autonomous system, but is also used for a wider range of other information.


dentist.org.cn server information

Servers Location

IP Address
119.3.203.25
Country
China
Region
Guangdong
City
Guangzhou

dentist.org.cn desktop page speed rank

Last tested: 2015-09-19


Desktop Speed Good
85/100

dentist.org.cn Desktop Speed Test Quick Summary


priority - 8 Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 73.3KiB (14% reduction).

Compressing and resizing http://dentist.org.cn/templets/default/images/wx.jpg could save 23KiB (84% reduction).
Compressing and resizing http://dentist.org.cn/templets/default/images/wb.png could save 7.5KiB (67% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/pub05.gif could save 3.6KiB (36% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/pub06.gif could save 3KiB (15% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/pub111.png could save 2.7KiB (97% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/pub12.gif could save 2.5KiB (15% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/pub27.gif could save 2.3KiB (32% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/pub07.gif could save 1.4KiB (61% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/mail.gif could save 1.2KiB (67% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/phone.gif could save 1.2KiB (65% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/pub01.gif could save 1.2KiB (59% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/pub21.gif could save 1.2KiB (67% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/input_bg.gif could save 1.1KiB (85% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/pub03.gif could save 1.1KiB (57% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/pub19.gif could save 1.1KiB (23% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/home.gif could save 1.1KiB (76% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/home01.gif could save 1.1KiB (76% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/pub08.gif could save 1.1KiB (30% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/logo01.gif could save 1.1KiB (57% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/search.gif could save 1.1KiB (82% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/pub10.gif could save 1.1KiB (80% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/pub09.gif could save 1.1KiB (80% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/pub15.gif could save 1KiB (68% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/pub11.gif could save 1,012B (92% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/pub04.gif could save 1,011B (92% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/pub18.gif could save 1,008B (87% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/pub24.gif could save 1,004B (81% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/pub23.gif could save 996B (81% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/pub17.gif could save 992B (88% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/pub02.gif could save 987B (76% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/pub14.gif could save 981B (59% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/bannernew.jpg could save 925B (1% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/hover_03.jpg could save 920B (2% reduction).
Losslessly compressing http://dentist.org.cn/templets/default/images/logo.jpg could save 919B (4% reduction).

priority - 6 Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 3 blocking script resources and 1 blocking CSS resources. This causes a delay in rendering your page.

None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.

Remove render-blocking JavaScript:

http://dentist.org.cn/templets/default/js/jquery.min.js
http://dentist.org.cn/templets/default/js/common.js
http://dentist.org.cn/templets/default/js/jquery.effect.js

Optimize CSS Delivery of the following:

http://dentist.org.cn/templets/default/style/style.css

priority - 2 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://dentist.org.cn/templets/default/js/common.js (60 minutes)
http://dentist.org.cn/templets/default/js/jquery.effect.js (60 minutes)
http://dentist.org.cn/templets/default/js/jquery.min.js (60 minutes)
http://dentist.org.cn/templets/default/style/style.css (60 minutes)

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 1.9KiB (13% reduction).

Minifying http://dentist.org.cn/templets/default/style/style.css could save 1.9KiB (13% 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 632B (12% reduction).

Minifying http://dentist.org.cn/ could save 632B (12% reduction) after compression.

dentist.org.cn Desktop Resources

Total Resources40
Number of Hosts1
Static Resources39
JavaScript Resources3
CSS Resources1

dentist.org.cn Desktop Resource Breakdown

dentist.org.cn mobile page speed rank

Last tested: 2019-06-29


Mobile Speed Bad
60/100

dentist.org.cn Mobile Speed Test Quick Summary


priority - 41 Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 399.2KiB (71% reduction).

Compressing http://dentist.org.cn/templets/default/images/bannernew.jpg could save 242KiB (76% reduction).
Compressing http://www.dentist.org.cn/templets/default/images/20181203001.jpg could save 55.4KiB (74% reduction).
Compressing http://dentist.org.cn/templets/default/images/hover_03.jpg could save 33.4KiB (72% reduction).
Compressing http://dentist.org.cn/templets/default/images/beiantubiao.png could save 17.4KiB (92% reduction).
Compressing http://dentist.org.cn/templets/default/images/logo.jpg could save 12.8KiB (56% reduction).
Compressing http://dentist.org.cn/templets/default/images/wx.jpg could save 9.3KiB (35% reduction).
Compressing http://dentist.org.cn/templets/default/images/ws_logo0929.png could save 3.1KiB (50% reduction).
Compressing http://dentist.org.cn/templets/default/images/pub111.png could save 2.7KiB (97% reduction).
Compressing http://dentist.org.cn/templets/default/images/pub07.gif could save 1.3KiB (60% reduction).
Compressing http://dentist.org.cn/templets/default/images/pub05.gif could save 1.2KiB (12% reduction).
Compressing http://dentist.org.cn/templets/default/images/home.gif could save 1.1KiB (75% reduction).
Compressing http://dentist.org.cn/templets/default/images/home01.gif could save 1.1KiB (75% reduction).
Compressing http://dentist.org.cn/templets/default/images/input_bg.gif could save 1.1KiB (80% reduction).
Compressing http://dentist.org.cn/templets/default/images/pub10.gif could save 1.1KiB (82% reduction).
Compressing http://dentist.org.cn/templets/default/images/pub21.gif could save 1.1KiB (62% reduction).
Compressing http://dentist.org.cn/templets/default/images/pub09.gif could save 1.1KiB (82% reduction).
Compressing http://dentist.org.cn/templets/default/images/pub03.gif could save 1.1KiB (53% reduction).
Compressing http://dentist.org.cn/templets/default/images/pub01.gif could save 1KiB (51% reduction).
Compressing http://dentist.org.cn/templets/default/images/pub18.gif could save 1KiB (89% reduction).
Compressing http://dentist.org.cn/templets/default/images/pub04.gif could save 1,023B (93% reduction).
Compressing http://dentist.org.cn/templets/default/images/pub11.gif could save 1,023B (93% reduction).
Compressing http://dentist.org.cn/templets/default/images/pub15.gif could save 1,023B (68% reduction).
Compressing http://dentist.org.cn/templets/default/images/pub17.gif could save 1,013B (90% reduction).
Compressing http://dentist.org.cn/templets/default/images/pub02.gif could save 996B (77% reduction).
Compressing http://dentist.org.cn/templets/default/images/search.gif could save 988B (74% reduction).
Compressing http://dentist.org.cn/templets/default/images/pub24.gif could save 966B (78% reduction).
Compressing http://dentist.org.cn/templets/default/images/pub23.gif could save 961B (78% reduction).
Compressing http://dentist.org.cn/templets/default/images/mail.gif could save 916B (49% reduction).
Compressing http://dentist.org.cn/templets/default/images/pub14.gif could save 894B (54% reduction).
Compressing http://dentist.org.cn/templets/default/images/phone.gif could save 891B (47% reduction).
Compressing http://dentist.org.cn/templets/default/images/pub08.gif could save 517B (14% reduction).

priority - 24 Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 3 blocking script resources and 1 blocking CSS resources. This causes a delay in rendering your page.

None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.

Remove render-blocking JavaScript:

http://dentist.org.cn/templets/default/js/jquery.min.js
http://dentist.org.cn/templets/default/js/common.js
http://dentist.org.cn/templets/default/js/jquery.effect.js

Optimize CSS Delivery of the following:

http://dentist.org.cn/templets/default/style/style.css

priority - 4 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://ourjs.github.io/static/2015/arrow.png (10 minutes)
http://dentist.org.cn/templets/default/js/common.js (60 minutes)
http://dentist.org.cn/templets/default/js/jquery.effect.js (60 minutes)
http://dentist.org.cn/templets/default/js/jquery.min.js (60 minutes)
http://dentist.org.cn/templets/default/js/js.js (60 minutes)
http://dentist.org.cn/templets/default/style/style.css (60 minutes)

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 2KiB (20% reduction).

Minifying http://dentist.org.cn/ could save 2KiB (20% reduction) after compression.

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 2KiB (13% reduction).

Minifying http://dentist.org.cn/templets/default/style/style.css could save 2KiB (13% reduction) after compression.

priority - 0 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 877B (23% reduction).

Minifying http://dentist.org.cn/templets/default/js/common.js could save 552B (22% reduction) after compression.
Minifying http://dentist.org.cn/templets/default/js/jquery.effect.js could save 212B (28% reduction) after compression.
Minifying http://dentist.org.cn/templets/default/js/js.js could save 113B (19% reduction) after compression.

dentist.org.cn Mobile Resources

Total Resources47
Number of Hosts4
Static Resources44
JavaScript Resources5
CSS Resources1

dentist.org.cn Mobile Resource Breakdown

dentist.org.cn mobile page usability

Last tested: 2019-06-29


Mobile Usability Bad
59/100

dentist.org.cn Mobile Usability Test Quick Summary


priority - 40 Use legible font sizes

The following text on your page renders in a way that may be difficult for some of your visitors to read. Use legible font sizes to provide a better user experience.

The following text fragments have a small font size. Increase the font size to make them more legible.

北京市卫生健康委员会 and 3 others render only 5 pixels tall (14 CSS pixels).

大众版 renders only 5 pixels tall (14 CSS pixels).

科室&专家 and 5 others render only 6 pixels tall (16 CSS pixels).

症状导诊 renders only 7 pixels tall (18 CSS pixels).

症       状: and 1 others render only 5 pixels tall (14 CSS pixels).

公告栏 renders only 7 pixels tall (18 CSS pixels).

北京口腔医院天坛部突发环境事件应急预案公示 and 3 others render only 5 pixels tall (14 CSS pixels).

健康大讲堂 and 4 others render only 7 pixels tall (18 CSS pixels).

专家查询 renders only 6 pixels tall (16 CSS pixels).

就医指南 renders only 8 pixels tall (20 CSS pixels).

> 就诊须知 and 9 others render only 6 pixels tall (16 CSS pixels).

在线咨询 renders only 7 pixels tall (18 CSS pixels).

提供最有可能使患者获益的多学科规范化治疗 renders only 5 pixels tall (14 CSS pixels).

招标采购 renders only 7 pixels tall (18 CSS pixels).

北京口腔医院门诊显示系统采购项目等中标公示 renders only 6 pixels tall (16 CSS pixels).

专题专栏 and 3 others render only 6 pixels tall (16 CSS pixels).

传播口腔健康知识,讲述医患真情故事 and 3 others render only 5 pixels tall (12 CSS pixels).

诊室故事 and 1 others render only 7 pixels tall (18 CSS pixels).

院务信箱 renders only 5 pixels tall (14 CSS pixels).

欢迎您对我们的工作提出宝贵意见 renders only 5 pixels tall (14 CSS pixels).

医院电话 renders only 5 pixels tall (14 CSS pixels).

010-57099114 renders only 5 pixels tall (14 CSS pixels).

关于网站 and 1 others render only 6 pixels tall (16 CSS pixels).

Copyright ©201…学附属北京口腔医院 版权所有 and 12 others render only 5 pixels tall (12 CSS pixels).

京公网安备 11010102001732号 renders only 5 pixels tall (12 CSS pixels).

电话:010-57099114 and 1 others render only 5 pixels tall (12 CSS pixels).

关注我们 renders only 6 pixels tall (16 CSS pixels).

微信 renders only 6 pixels tall (16 CSS pixels).

微博 renders only 6 pixels tall (16 CSS pixels).

X renders only 6 pixels tall (16 CSS pixels).

priority - 10 Configure the viewport

Your page does not have a viewport specified. This causes mobile devices to render your page as it would appear on a desktop browser, scaling it down to fit on a mobile screen. Configure a viewport to allow your page to render properly on all devices.

Configure a viewport for this page.

priority - 9 Avoid plugins

Your page uses plugins, which prevents portions of your page from being used on many platforms. Find alternatives for plugin based content to increase compatibility.

Find alternatives for the following Flash plugins.

http://dentist.org.cn/templets/default/images/banner.swf (1,000 x 300).

priority - 9 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.

The tap target <a href="http://wjw.beijing.gov.cn/">北京市卫生健康委员会</a> is close to 1 other tap targets.

The tap target <a href="/"></a> is close to 1 other tap targets.

The tap target <input type="button" class="searchBlock search02"> is close to 1 other tap targets.

The tap target <a id="indexMenu" href="/" class="menu_second_curr current"> is close to 1 other tap targets.

The tap target <a href="/yygk/article/10324.html">医院概况</a> and 5 others are close to other tap targets.

The tap target <a href="/xwzx/list/298.html">公告栏</a> is close to 1 other tap targets.

The tap target <a href="/xwzx/article/16318.html">北京口腔医院2019年社会招聘公告</a> and 3 others are close to other tap targets.

The tap target <a href="/jyzn/list/424.html">&gt; 就诊须知</a> and 9 others are close to other tap targets.

The tap target <li id="prev_ban" class="pre"> is close to 3 other tap targets.

The tap target <li id="next_ban" class="next"> is close to 2 other tap targets.

The tap target <a href="/yygk/list/391.html" class="blockc1_que">招标采购</a> is close to 1 other tap targets.

The tap target <a href="/singlepage/1.html">手机版下载</a> and 7 others are close to other tap targets.

The tap target <a href="http://bszs.co…53012819ACE948"></a> is close to 1 other tap targets.

The tap target <a href="http://www.den…cle/15124.html"></a> is close to 1 other tap targets.

The tap target <span>X</span> is close to 2 other tap targets.

priority - 6 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 1,002 CSS pixels wide, but the viewport is only 980 CSS pixels wide. The following elements fall outside the viewport:

The element <a href="/english/article/11234.html">ENGLISH</a> falls outside the viewport.
The element <input type="button" class="searchBlock search02"> falls outside the viewport.
The element <a href="/zxzx/">互动交流</a> falls outside the viewport.
The element <embed> falls outside the viewport.
The element <img src="/templets/defa…es/banner1.gif"> falls outside the viewport.
The element <p class="jzzn">就医指南</p> falls outside the viewport.
The element <li>&gt; 预约挂号</li> falls outside the viewport.
The element <li>&gt; 出诊信息</li> falls outside the viewport.
The element <li>&gt; 停诊公告</li> falls outside the viewport.
The element <li>&gt; 交通指南</li> falls outside the viewport.
The element <li>&gt; 医保就医</li> falls outside the viewport.
The element <span class="yy"> falls outside the viewport.
The element <li id="next_ban" class="next"> falls outside the viewport.
The element <a href="/message/" class="ablock ablock8">意见反馈</a> falls outside the viewport.
The element <section class="blockc clearfix">招标采购…门诊时间</section> falls outside the viewport.
The element <p class="footer_cl01">医院电话</p> falls outside the viewport.
The element <p>010-57099114</p> falls outside the viewport.
The element <dt>关注我们</dt> falls outside the viewport.
The element <img src="/templets/defa…/images/wb.png"> falls outside the viewport.

dentist.org.cn similar domains

Similar domains:
www.dentist.com
www.dentist.net
www.dentist.org
www.dentist.info
www.dentist.biz
www.dentist.us
www.dentist.mobi
www.entist.org.cn
www.dentist.org.cn
www.xentist.org.cn
www.dxentist.org.cn
www.xdentist.org.cn
www.sentist.org.cn
www.dsentist.org.cn
www.sdentist.org.cn
www.eentist.org.cn
www.deentist.org.cn
www.edentist.org.cn
www.rentist.org.cn
www.drentist.org.cn
www.rdentist.org.cn
www.fentist.org.cn
www.dfentist.org.cn
www.fdentist.org.cn
www.centist.org.cn
www.dcentist.org.cn
www.cdentist.org.cn
www.dntist.org.cn
www.dwntist.org.cn
www.dewntist.org.cn
www.dwentist.org.cn
www.dsntist.org.cn
www.desntist.org.cn
www.ddntist.org.cn
www.dedntist.org.cn
www.ddentist.org.cn
www.drntist.org.cn
www.derntist.org.cn
www.detist.org.cn
www.debtist.org.cn
www.denbtist.org.cn
www.debntist.org.cn
www.dehtist.org.cn
www.denhtist.org.cn
www.dehntist.org.cn
www.dejtist.org.cn
www.denjtist.org.cn
www.dejntist.org.cn
www.demtist.org.cn
www.denmtist.org.cn
www.demntist.org.cn
www.denist.org.cn
www.denrist.org.cn
www.dentrist.org.cn
www.denrtist.org.cn
www.denfist.org.cn
www.dentfist.org.cn
www.denftist.org.cn
www.dengist.org.cn
www.dentgist.org.cn
www.dengtist.org.cn
www.denyist.org.cn
www.dentyist.org.cn
www.denytist.org.cn
www.dentst.org.cn
www.dentust.org.cn
www.dentiust.org.cn
www.dentuist.org.cn
www.dentjst.org.cn
www.dentijst.org.cn
www.dentjist.org.cn
www.dentkst.org.cn
www.dentikst.org.cn
www.dentkist.org.cn
www.dentost.org.cn
www.dentiost.org.cn
www.dentoist.org.cn
www.dentit.org.cn
www.dentiwt.org.cn
www.dentiswt.org.cn
www.dentiwst.org.cn
www.dentiet.org.cn
www.dentiset.org.cn
www.dentiest.org.cn
www.dentidt.org.cn
www.dentisdt.org.cn
www.dentidst.org.cn
www.dentizt.org.cn
www.dentiszt.org.cn
www.dentizst.org.cn
www.dentixt.org.cn
www.dentisxt.org.cn
www.dentixst.org.cn
www.dentiat.org.cn
www.dentisat.org.cn
www.dentiast.org.cn
www.dentis.org.cn
www.dentisr.org.cn
www.dentistr.org.cn
www.dentisrt.org.cn
www.dentisf.org.cn
www.dentistf.org.cn
www.dentisft.org.cn
www.dentisg.org.cn
www.dentistg.org.cn
www.dentisgt.org.cn
www.dentisy.org.cn
www.dentisty.org.cn
www.dentisyt.org.cn

dentist.org.cn Ping

Ping is a networking utility tool to test if a particular host is reachable. It is a diagnostic that checks reachability of a host on an Internet Protocol (IP) network. In a computer network, a ping test is a way of sending messages from one host to another. Aside from checking if the host is connected to a network, ping also gives indicators of the reliability and general speed of the connection.


dentist.org.cn TRACEROUTE

Traceroute is a network diagnostic tool used to track the pathway taken by a packet on an IP network from source to destination. Traceroute also records the time taken for each hop the packet makes during its route to the destination. Traceroute uses ICMP (Internet Control Message Protocol) echo packets with variable time to live values. The response time of each hop is calculated. To guarantee accuracy, each hop is queried multiple times (usually three times) to better measure the response of that particular hop.