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Zhihu.com 知乎 - 有问题，上知乎

有问题，上知乎。知乎，可信赖的问答社区，以让每个人高效获得可信赖的解答为使命。知乎凭借认真、专业和友善的社区氛围，结构化、易获得的优质内容，基于问答的内容生产方式和独特的社区机制，吸引、聚集了各行各业中大量的亲历者、内行人、领域专家、领域爱好者，将高质量的内容透过人的节点来成规模地生产和分享。用户通...

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Online Status
Offline

Server IP address resolved: No
Http response code: None
Last Checked: 09/16/2019

Zhihu.com receives about two million unique visitors and seven million pageviews per day. The estimated value of zhihu.com is ninety million USD. Each unique visitor makes about 3.44 pageviews on average.

Over the time zhihu.com has been ranked as high as 16 in the world, while most of its traffic comes from China, where it reached as high as 24 position.

Zhihu.com is registered under .COM top-level domain. Check other websites in .COM zone.

At the time of the last check (November 28, 2019) zhihu.com has a valid and up-to-date wildcard SSL certificate issued by DigiCert Inc that expires on December 24, 2020. Check other websites using SSL certificates issued by DigiCert Inc.

According to Google Safe Browsing, Google Safe Search, Symantec and Web of Trust zhihu.com is quite a safe domain.

Mobile-Friendly test indicates that zhihu.com is well optimized for mobile and tablet devices.

Global Rank
103
Average Load Time
1.61sec
Links In Count
4,577
Website Value
$87.8 M

Audience Geography. Where are zhihu.com visitors located?

Country Percent of Pageviews
China China CN90.7%
Japan Japan JP3.4%
United States United States US1.7%
Hong Kong Hong Kong HK1%
Taiwan Taiwan TW0.7%
Other2.4%
Country Percent of Visitors
China China CN87.5%
Japan Japan JP4.1%
United States United States US2.4%
Taiwan Taiwan TW1.6%
Hong Kong Hong Kong HK1.3%
Other3.1%

Where do visitors go on zhihu.com?

Subdomain Pageviews
zhihu.com		81.81%
zhuanlan.zhihu.com		14.31%
link.zhihu.com		3.18%
daily.zhihu.com		0.44%
api.zhihu.com		0.11%
liukanshan.zhihu.com		0.09%
other		0.07%
Subdomain Pageviews per User
zhihu.com		3.11
daily.zhihu.com		2.2
zhuanlan.zhihu.com		2.05
liukanshan.zhihu.com		1.3
api.zhihu.com		1.1
link.zhihu.com		1.04
Subdomain Reach
zhihu.com		92.69%
zhuanlan.zhihu.com		24.59%
link.zhihu.com		10.72%
daily.zhihu.com		0.7%
api.zhihu.com		0.32%
liukanshan.zhihu.com		0.26%

How popular is zhihu.com?

Days Reach Rank Reach Rank Delta Reach per Million Reach per Million Delta
90102-47608039.1%
3011025820-2.45%
7112255401%
110866000-2.77%
Days Pageviews Rank Pageviews Rank Delta Pageviews per Million Pageviews per Million Delta Pageviews per User Pageviews per User Delta
90134-75562560.6%3.4415%
301362556-2.74%3.52-0.28%
71457524-1.19%3.51-2.5%
1137-35532%3.65%
Period Global Rank Global Rank Delta
past 3 months103-51
past month1104
past week114-2
yesterday104-1

Alexa Rank shows how popular zhihu.com is in comparison with other sites. The most popular site has Alexa Rank equals 1. If zhihu.com has Alexa Rank equals 100,000, then it is in TOP 100,000 popular sites in the world. The rank is calculated using a combination of average daily visitors to zhihu.com and pageviews on zhihu.com over the past 3 months.

Overview
Last Updated: 01/22/2020
Overall result - "zhihu.com" is SAFE.
We gather website safety and reputation data and compare it with available third-party sources so we calculate own safety and trustworthiness rate based on information that we get.
Norton Connect Safe
Last Updated: 01/12/2019
NCS "zhihu.com" OK.

Norton ConnectSafe evaluates zhihu.com for any unsafe and insecure content. The results are critical for families with young children.

Google Safe Search
Last Updated: 01/22/2020
GSS "zhihu.com" OK.

SafeSearch is used as a parental control tool to filter out any inappropriate for your children search results on your devices: phones, tablets or personal computers.

Google Safe Browsing
Last Updated: 02/18/2019
Malware not found at "zhihu.com".
"zhihu.com" is not a phishing page.
"zhihu.com" does not install unwanted software.
"zhihu.com" does not contain harmfull applications.
Google Safe Browsing notifies when websites are compromised by malicious actors. These protections work across Google products and provide a safer online experience.
Site Advisor
Last Updated: 01/09/2019
SA "zhihu.com" OK.

McAfee assesses zhihu.com for a meaningful set of security threats. Featured dangers from annoying pop-ups to hidden Trojans, that can steal your identity, will be revealed. McAfee does not analyze zhihu.com for mature or inappropriate content, only security checks are evaluated.

Web of Trust
Last Updated: 01/09/2019
WOT "zhihu.com" VERY GOOD.

The WOT calculates reputation of the zhihu.com. This reputation system receives ratings from users and information from third-party sources, assesses the zhihu.com for safety features and confirms, whether zhihu.com is suitable for children.

SSL Information
SSL Checker Tool
Domain *.zhihu.com
Issuer Organization DigiCert Inc
Issuer GeoTrust RSA CA 2018
Algorithm RSA-SHA256
Valid form 12/25/2017
Expiration 12/24/2020
Signed Certificate is not self signed
Additional Domains *.zhihu.com
zhihu.com
Server Location
Geolocation Tool
Beijing
Beijing
China
ASN Information
ASN Lookup Tool

ASN ID: 45090
ASN Title: CNNIC-TENCENT-NET-AP Shenzhen Tencent Computer Systems Company Limited, CN

Last Update: 12/25/2018

% [whois.apnic.net]
% Whois data copyright terms http://www.apnic.net/db/dbcopyright.html

% Information related to 'AS45056 - AS45115'

as-block: AS45056 - AS45115
descr: CNNIC ASN block
country: CN
remarks: These AS numbers are further assigned by CNNIC
remarks: to CNNIC members and end-users in China
admin-c: IPAS1-AP
tech-c: IPAS1-AP
mnt-by: APNIC-HM
mnt-lower: MAINT-CNNIC-AP
last-modified: 2009-09-29T06:15:17Z
source: APNIC

role: CNNIC IPAS CONFEDERATION
address: No.4, Zhongguancun No.4 South Street,
address: Haidian District, Beijing
country: CN
phone: +86-010-58813000
fax-no: +86-010-58813075
e-mail: ipas@cnnic.cn
admin-c: IP50-AP
tech-c: IP50-AP
nic-hdl: IPAS1-AP
mnt-by: MAINT-CNNIC-AP
last-modified: 2013-09-12T07:40:01Z
source: APNIC

% Information related to 'AS45056 - AS46079'

as-block: AS45056 - AS46079
descr: APNIC ASN block
remarks: These AS numbers are further assigned by APNIC
remarks: to APNIC members and end-users in the APNIC region
admin-c: HM20-AP
tech-c: HM20-AP
mnt-by: APNIC-HM
mnt-lower: APNIC-HM
last-modified: 2009-09-29T05:48:11Z
source: APNIC

role: APNIC Hostmaster
address: 6 Cordelia Street
address: South Brisbane
address: QLD 4101
country: AU
phone: +61 7 3858 3100
fax-no: +61 7 3858 3199
e-mail: helpdesk@apnic.net
admin-c: AMS11-AP
tech-c: AH256-AP
nic-hdl: HM20-AP
remarks: Administrator for APNIC
notify: hostmaster@apnic.net
mnt-by: MAINT-APNIC-AP
last-modified: 2013-10-23T04:06:51Z
source: APNIC

% Information related to 'AS45090'

% Abuse contact for 'AS45090' is 'ipas@cnnic.cn'

aut-num: AS45090
as-name: CNNIC-TENCENT-NET-AP
descr: Shenzhen Tencent Computer Systems Company Limited
descr: Tencent Building, Kejizhongyi Avenue, Hi-techPark,Nanshan
descr: District,Shenzhen
country: CN
import: from AS18118
action pref=100;
accept ANY
import: from AS17962
action pref=100;
accept ANY
export: to AS18118
announce AS45090
export: to AS17962
announce AS45090
admin-c: DR196-AP
tech-c: JW2054-AP
mnt-routes: MAINT-CNNIC-AP
mnt-by: MAINT-CNNIC-AP
mnt-irt: IRT-CNNIC-CN
last-modified: 2016-10-17T00:30:37Z
source: APNIC

irt: IRT-CNNIC-CN
address: Beijing, China
e-mail: ipas@cnnic.cn
abuse-mailbox: ipas@cnnic.cn
admin-c: IP50-AP
tech-c: IP50-AP
auth: # Filtered
remarks: Please note that CNNIC is not an ISP and is not
remarks: empowered to investigate complaints of network abuse.
remarks: Please contact the tech-c or admin-c of the network.
mnt-by: MAINT-CNNIC-AP
last-modified: 2017-11-01T08:57:39Z
source: APNIC

person: Dreams Ruan
address: Tencent Building, Kejizhongyi Avenue, Hi-techPark,Nanshan District,Shenzhen
country: CN
phone: +86-755-86013388-84520
fax-no: +86-755-86013030
e-mail: dreamsruan@tencent.com
nic-hdl: DR196-AP
mnt-by: MAINT-CNNIC-AP
last-modified: 2010-05-10T10:02:01Z
source: APNIC

person: Jsquare Wu
address: Tencent Building, Kejizhongyi Avenue, Hi-techPark,Nanshan District,Shenzhen
country: CN
phone: +86-755-86013388-88441
fax-no: +86-755-86013030
e-mail: jsquare@tencent.com
nic-hdl: JW2054-AP
mnt-by: MAINT-CNNIC-AP
last-modified: 2010-05-10T10:02:01Z
source: APNIC

% This query was served by the APNIC Whois Service version 1.88.15-46 (WHOIS-US4)

HTML Metatags
Title
知乎 - 有问题，上知乎
The title has an optimal length. Search engines typically displays the first 50–70 characters of a title tag. If you keep your titles under 70 characters, our research suggests that you can expect about 90% of your titles to display properly.
Description
有问题，上知乎。知乎，可信赖的问答社区，以让每个人高效获得可信赖的解答为使命。知乎凭借认真、专业和友善的社区氛围，结构化、易获得的优质内容，基于问答的内容生产方式和独特的社区机制，吸引、聚集了各行各业中大量的亲历者、内行人、领域专家、领域爱好者，将高质量的内容透过人的节点来成规模地生产和分享。用户通过问答等交流方式建立信任和连接，打造和提升个人影响力，并发现、获得新机会。
The description has optimal length. Keep in mind that the "optimal" length will vary depending on the situation, and your primary goal should be to provide value and drive clicks.
Encoding
UTF-8
You should always specify the encoding used for an HTML page. If you don't, you risk that characters in your content are incorrectly interpreted. This is not just an issue of human readability, increasingly machines need to understand your data too.
Language
zh Chinese
Identifying the language of your content allows you to automatically do a number of things, from changing the look and behavior of a page, to assisting search engines in extracting information. If part of the page uses text in a different language, you can add a language attribute with a different value to the element that surrounds that content.
Language Region
Not Found
Images
Attribute ALT
Line 13, ...<img class="SignFlowHomepage-logo" src="https://pic4.zhimg.com/80...
Line 13, ...<img src="https://pic3.zhimg.com/80/v2-d0289dc0a46fc5b15b3363ffa7...
As a general rule, search engines do not interpret the content of image files. The text provided in the <img alt> attribute enables the site owner to provide relevant information to the search engine and to the end user.
H1-H6 Tags Information

For search engines, <H> tags helps understand the structure of the text on a page better. For users, headings are like anchors in a wall of text, navigating them through the page and making it easier to digest. The <h1> tag reinforces the core keyword(s) found in the <title>, <description>, and the <body>. We recommend that the <h1> tag includes keywords that reflect the contents of the page and that it is not longer than 150 characters in length, but don’t overuse the tags and the keywords in them. Keep it readable for users.

H1
The H1 tag is missing
Your H1 introduces the topic your page is all about, just as a title tells a reader what a book is all about. Add a header to the page by using a H1 tag and place it within the BODY of the page source.
H2
—
The H2s are akin to book chapters, describing the main topics you’ll cover in sections of the article.
H3
—
Subsequent headers, H3s to H6s, serve as additional sub-headings within each section, just as a book chapter may be split up by multiple sub-topics.
H4
—
H5
—
H6
—
Iframes Information
iFrame
iFrames not found.
Since search engines consider the content in iframes to belong to another website, the best you can hope for is no effect on SEO. Iframes tend to neither help nor hurt your search engine ranking. For this reason, it’s best to refrain from using iframes on main pages that you want to rank high in search engine results. Instead, fill high-priority pages with useful, unique content and save iframes for other pages.
Code To Text Ratio
Code To Text Ratio
0.54 %
A good code to text ratio is anywhere from 25 to 70 percent. This percentage refers to the visible text ratio, as opposed to HTML elements, image tags and other non-visible information. This has become especially apparent since search engines, such as Google, released the Panda update which placed importance on content-driven sites.
Favicons

Favicons are the little piece of graphic that represents your brand on browser tabs, bookmark lists, search history, search ads and even search results. These files are placed in a file called favicon.ico and placed in the root directory of a website. There are no direct SEO effects of having favicons. However, there may be indirect benefits such as increased usability of site and bookmarks. It makes your website look more professional and help a users to remember your site while browsing through multiple URLs. If you want to get mentioned benefits you have to specify icons for different web browsers and sometimes even for different mobiles.

Default Favicon
Line 2, https://static.zhihu.com/static/favicon.ico
default, favicon.ico
Backup icon for most desktop browsers (if no icon of the right size is found). Tag format <link rel="shortcut icon" href="path-to-16x16-icon.ico" type="image/x-icon" />
16x16 Optional Favicon
—
Standard icon for outdated browsers or small resolution hand held devices. Tag format <link rel="icon" type="image/png" sizes="16x16" href="path-to-16x16.png">
32x32 Optional Favicon
—
Standard for most desktop browsers. Tag format <link rel="icon" sizes="32x32" href="path-to-32x32.png">
96x96 Optional Favicon
—
Mostly used as GoogleTV icon. Tag format <link rel="icon" type="image/png" sizes="96x96" href="path-to-96x96.png">
Default Apple Icon
Line 2, https://static.zhihu.com/heifetz/assets/apple-touch-icon-152.67c7b278.png
Backup icon for apple devices (if no icon of the right size is found). Preferrable size 60x60. Tag format <link rel="apple-touch-icon" sizes="72x72" href="path-to-small-icon.png">
180x180 Apple Icon
—
iPhone 6 plus icons. Tag format <link rel="apple-touch-icon" sizes="180x180" href="path-to-180x180.png">
152x152 Apple Icon
Line 2, https://static.zhihu.com/heifetz/assets/apple-touch-icon-152.67c7b278.png
iPad, iPad mini icons. Tag format <link rel="apple-touch-icon" sizes="152x152" href="path-to-icon-152x152.png">
167x167 Apple Icon
—
iPad Pro icon. Tag format <link rel="apple-touch-icon" sizes="167x167" href="path-to-167x167.png">
Robots.txt Information

Robots.txt is a text file that website owners can create to tell search engine bots how to crawl and index pages on their site.

Robots File
Robots File Loaded successfully (/robots.txt)
You can have multiple lines of instructions to allow or disallow specific URLs and add multiple sitemaps. If you do not disallow a URL, then search engine bots assume that they are allowed to crawl it.
Disallow
192 record(s)
Other User-Agent
20 record(s)
Default User-Agent
1 record(s)
Sitemap

A sitemap is an XML file where is provided information about each URL: when it was last updated, how often it changes, and how important it is in relation to other URLs in the site. Search engines crawling bots read this file to more efficiently and intelligently crawl your site and to find URLs that may be isolated from rest of the site's content.

Default Sitemap
Sitemap File failed Loaded (/sitemap.xml)
Your site will benefit from having a sitemap.
WHOIS
WHOIS Lookup Tool

Domain Name: ZHIHU.COM
Registry Domain ID: 1030643753_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.godaddy.com
Registrar URL: http://www.godaddy.com
Updated Date: 2018-05-30T06:12:21Z
Creation Date: 2007-06-15T17:28:11Z
Registry Expiry Date: 2023-09-29T11:59:59Z
Registrar: GoDaddy.com, LLC
Registrar IANA ID: 146
Registrar Abuse Contact Email: abuse@godaddy.com
Registrar Abuse Contact Phone: 480-624-2505
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
Name Server: NS3.DNSV5.COM
Name Server: NS4.DNSV5.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2018-11-08T12:41:31Z

DNS Records
DNS Lookup Tool
HostA RecordTTL
zhihu.com118.89.204.192120
zhihu.com118.89.204.190120
HostMX RecordPriorityTTL
zhihu.comASPMX2.GOOGLEMAIL.COM103600
zhihu.comASPMX3.GOOGLEMAIL.COM103600
zhihu.comASPMX4.GOOGLEMAIL.COM103600
zhihu.comASPMX5.GOOGLEMAIL.COM103600
zhihu.comASPMX.L.GOOGLE.COM13600
zhihu.comALT1.ASPMX.L.GOOGLE.COM53600
zhihu.comALT2.ASPMX.L.GOOGLE.COM53600
HostNS RecordTTL
zhihu.comns4.dnsv5.com86400
zhihu.comns3.dnsv5.com86400
HostTXT RecordTTL
zhihu.comm5g7qjk31l5d1hkq6m3zvcf6lg2f0h16600
zhihu.comv=spf1 include:_spf.google.com -all3600
zhihu.comv=spf1 include:_spf.google.com include:cust-spf.edmsphere.com -all600

ns3.dnsv5.com
TTL: 600
Email address: enterprise3dnsadmin.dnspod.com
Serial: 1564763161
Refresh: 3600
Retry: 180
Expire: 1209600
Minimum: 180

HTML Validation Tool
Errors
Warnings
Desktop Page Insights Tool

Last tested: 12/21/2016

Desktop
Desktop Speed
84%
Desktop Resource Breakdown
Total Resources21
Number of Hosts6
Static Resources10
JavaScript Resources9
CSS Resources1
Mobile Page Insights Tool

Last tested: 12/21/2016

Mobile
Mobile Usability
100%
Mobile Speed
70%
Mobile Resource Breakdown
Total Resources21
Number of Hosts6
Static Resources10
JavaScript Resources8
CSS Resources1
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