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W3school.com.cn w3school 在线教程

全球最大的中文 Web 技术教程。

Online Status
Offline

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

Over the time w3school.com.cn has been ranked as high as 348 in the world, while most of its traffic comes from China, where it reached as high as 137 position.

W3school.com.cn receives about 178,651 unique visitors and 661,009 pageviews per day. The estimated value of w3school.com.cn is 8,685,540 USD. Each unique visitor makes about 3.7 pageviews on average.

W3school.com.cn is registered under .CN top-level domain. Check other websites in .CN zone.

At the time of the last check (November 28, 2019) w3school.com.cn has a valid and up-to-date SSL certificate issued by DigiCert Inc that expires on July 27, 2020. Check other websites using SSL certificates issued by DigiCert Inc.

According to Google Safe Browsing, Google Safe Search, Symantec and Web of Trust w3school.com.cn is quite a safe domain.

Mobile-Friendly test indicates that w3school.com.cn is well optimized for mobile and tablet devices.

Global Rank
1,027
Average Load Time
1.20sec
Links In Count
1,913
Website Value
$8.7 M
Overview
Last Updated: 05/27/2020
Overall result - "w3school.com.cn" 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
w3school.com.cn is safe.

Norton ConnectSafe evaluates w3school.com.cn for any unsafe and insecure content. The results are critical for families with young children.

Google Safe Search
Last Updated: 02/01/2019
w3school.com.cn is safe.

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: 01/09/2019
Malware not found at "w3school.com.cn".
"w3school.com.cn" is not a phishing page.
"w3school.com.cn" does not install unwanted software.
"w3school.com.cn" 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: 02/22/2020
w3school.com.cn is safe.

McAfee assesses w3school.com.cn 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 w3school.com.cn for mature or inappropriate content, only security checks are evaluated.

Web of Trust
Last Updated: 01/09/2019
w3school.com.cn child safety isvery good.

The WOT calculates reputation of the w3school.com.cn. This reputation system receives ratings from users and information from third-party sources, assesses the w3school.com.cn for safety features and confirms, whether w3school.com.cn is suitable for children.

SSL Information
Domain www.w3school.com.cn
Issuer OrganizationDigiCert Inc
Issuer Encryption Everywhere DV TLS CA - G1
Algorithm RSA-SHA256
Valid form 07/28/2019
Expiration 07/27/2020
SignedCertificate is not self signed
Additional Domains www.w3school.com.cn
w3school.com.cn
Server Location
Hangzhou
Zhejiang
China
ASN Information

Last Update: 03/05/2020

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% Information related to 'AS37963'

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person: Shuo Yu
address: 5F, Builing D, the West Lake International Plaza of S&T
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person: Guoxin Gao
address: 5F, Builing D, the West Lake International Plaza of S&T
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person: security trouble
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% This query was served by the APNIC Whois Service version 1.88.15-46 (WHOIS-US4)

WHOIS

Domain Name: w3school.com.cn
ROID: 20060720s10011s66954821-cn
Domain Status: clientTransferProhibited
Registrant ID: hc9292213483189
Registrant: 杨伟伟
Registrant Contact Email: rgb@qq.com
Sponsoring Registrar: 阿里云计算有限公司(万网)
Name Server: dns7.hichina.com
Name Server: dns8.hichina.com
Registration Time: 2006-07-20 11:05:27
Expiration Time: 2028-07-20 11:05:27
DNSSEC: unsigned

DNS Records
HostA RecordTTL
w3school.com.cn120.55.40.41600
HostMX RecordPriorityTTL
w3school.com.cnmxbiz1.qq.com53600
w3school.com.cnmxbiz2.qq.com103600
HostNS RecordTTL
w3school.com.cndns8.hichina.com86400
w3school.com.cndns7.hichina.com86400
HostTXT RecordTTL

dns7.hichina.com
TTL: 3600
Email address: hostmaster.hichina.com
Serial: 2017070300
Refresh: 3600
Retry: 1200
Expire: 3600
Minimum: 360

Errors
Warnings
NON-DOCUMENT-ERROR

Last tested: 09/12/2018

Desktop
Desktop Speed
88%
Desktop Resource Breakdown
Total Resources20
Number of Hosts5
Static Resources16
JavaScript Resources2
CSS Resources1

Last tested: 02/08/2018

Mobile
Mobile Usability
89%
Mobile Speed
99%
Mobile Resource Breakdown
Total Resources2
Number of Hosts1
Static Resources1
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