21tb.com Web Analysis and Statistics
Website Summary
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When was the website 21tb.com released?
21tb.com was registered on August 16, 2002 (21 years 8 months 20 days ago).
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What is the traffic rank for 21tb.com?
Website 21tb.com ranked 7,573 globally and 557 in China.
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How many people visit 21tb.com each day?
21tb.com has about 170,000 visits and 1,000,000 pageviews per day.
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How much does 21tb.com earn a month?
Each month 21tb.com can earn $25,500 from advertising revenue.
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How much is 21tb.com worth?
Estimated value of 21tb.com is $910,000
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What IP addresses does 21tb.com resolve to?
21tb.com resolves to the IP addresses 123.103.18.6
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Where is 21tb.com server located?
21tb.com's server is located in Beijing, Beijing, China, 100006.
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Who is registrar of 21tb.com domain?
The 21tb.com domain is registered and managed by Xin Net Technology Corporation
21tb.com's metrics:
- Global traffic rank:
- 7,573
- Traffic rank in China:
- 557
- Domain authority:
- 1 / 100
- Daily income:
- $850.00
- Estimated Worth:
- $910,000
- Bing indexed pages:
- 92
- Yahoo indexed pages:
- 92
- Website category:
- Business
- Safety status:
- Safe
HTML Analysis
HTML Meta tags:
Description: 时代光华是基于网络在线的组织学习方案服务商，以e-learning平台网上学习平台服务为主业，业务涵盖内容：在线学习平台、课件软件、学习系统、在线考试系统、移动学习、企业培训管理公开课、管理课程、企业培训、企业内训等。
Logo:
HTML elements:
- H1 Headings:
- 1
- H2 Headings:
- 0
- H3 Headings:
- 0
- H4 Headings:
- 0
- H5 Headings:
- 0
- H6 Headings:
- 0
- Total Images:
- 24
- Total IFRAMEs:
- 0
Links analysis:
- Total links:
- 152
- Internal links:
- 87
- Internal links (nofollow):
- 2
- External links:
- 13
- External links (nofollow):
- 5
HTML resources breakdown:
The homepage of 21tb.com contains 108 resources, the total size is 3.57 MB. They are distributed as follows:
In addition, the 21tb.com homepage also uses 89 third-party resources, the total size is 3.44 MB.
HTTP Header:
Http-Version: 1.1
Status-Code: 200
Status: 200 OK
Content-Type: text/html; charset=UTF-8
Transfer-Encoding: chunked
Connection: keep-alive
Date: Mon, 27 Feb 2023 09:47:04 GMT
FAI-CACHE-STATUS: HIT
Content-Encoding: gzip
Origin-Agent-Cluster: ?0
X-Download-Options: noopen
Cache-Flow: 2532722888
X-XSS-Protection: 1; mode=block
X-Content-Type-Options: nosniff
Service-Lane: efa648fe06af06d3e4417ec745b57ed6
FAI-W-FLOW: 262233040
FAI-W-AGENT-AID: 15054508
P3P: CP=CAO PSA OUR
X-Permitted-Cross-Domain-Policies: none
Server: F-WEB
21tb.com Traffic Analysis
- Daily unique visitors:
- 170,000
- Daily pageviews:
- 1,000,000
- Daily pageviews per visitor:
- 5.9
- Monthly visits:
- 5,100,000
- Annual visits:
- 62,050,000
Google Lighthouse Audit
Google Lighthouse is an open-source, automated tool for measuring the quality of web pages. Google Lighthouse audits websites on two separate mobile and desktop environments. Audit results are based on scores from 1-100 and are divided into 5 parts:
- Performance: This is the most important part, it evaluates the performance of your website. Performance based on Core Web Vitals and key parameters such as First Contentful Paint (FCP), First Input Delay (FID), Largest Contentful Paint (LCP) and Cumulative Layout Shift (CLS).
- Accessibility: Test user accessibility to your web application.
- Best Practices: Website Trust and Safety testing, extensions, XSS, HTTPS...
- SEO (on page): These checks ensure that your page is following basic search engine optimization advice.
- Progressive Web App (PWA): Check out the modern technologies used on your web app.
Here are the results of the Google Lighthouse audit for the website 21tb.com:
On Mobile
On Desktop
21tb.com SSL Certificate Information
Common name: *.21tb.com
SANs: *.21tb.com, 21tb.com
Organization: 上海时代光华教育发展有限公司
Location: 上海市, CN
Serial Number: 0260006087623088A385941410205331
Signature Algorithm: RSA-SHA256
Issuer: GeoTrust RSA CN CA G3
Fingerprint: 3221c786c77d4f6ccf64bea0f395b6178cbd28bb
FingerprintSha256: 14fb150a23994272dda1b44342c62e095e7740601c9f4cd87ca01c4cbcba2a4b
21tb.com Domain Name Information
- Domain TLD:
- com
- Domain Registrar:
- Xin Net Technology Corporation
- Registration Date:
- August 16, 2002
- Expiration Date:
- August 16, 2025
- Domain Age:
- 21 years 8 months 20 days
- Domain Status:
- ok
Domain Nameserver Information:
Full WHOIS Lookup:
Registry Domain ID: 89388819_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.paycenter.com.cn
Registrar URL: http://www.xinnet.com
Updated Date: 2022-06-14T07:18:06Z
Creation Date: 2002-08-16T06:06:36Z
Registry Expiry Date: 2025-08-16T06:06:36Z
Registrar: Xin Net Technology Corporation
Registrar IANA ID: 120
Registrar Abuse Contact Email: [email protected]
Registrar Abuse Contact Phone: +86.4008182233
Domain Status: ok https://icann.org/epp#ok
Name Server: NS1.21TB.COM
Name Server: NS2.21TB.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2023-02-27T15:42:03Z
21tb.com Server Information
- Server IP Address:
- 123.103.18.6
- Hosted Country:
- 🇨🇳 China
- Latitude, longitude:
- 39.9075 , 116.397
- Location:
- Beijing, Beijing, China, 100006
DNS Record Analysis:
RNAME: hezitong.21tb.com
Serial: 2021042862
Refresh: 43200
Retry: 1800
Expire: 1209600
Minimum TTL: 1200
Target: mx-antispam.21tb.com
Typos of 21tb.com
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- 21rb.com
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