How2j.cn How2J 的 Java教程

How2J的Java教程, 内容涵盖J2SE、WEB前端、J2EE、框架技术等全面的Java内容。 基于实例代码和视频讲解的学习方式为Java职业生涯打下坚实的基础

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UNKNOWN

How2j.cn receives about 1,772 unique visitors and 3,544 pageviews per day. The estimated value of how2j.cn is 2,640 USD. Each unique visitor makes about 2 pageviews on average.

How2j.cn is registered under .CN top-level domain. Check other websites in .CN zone.

At the time of the last check (August 31, 2024) how2j.cn has an expired SSL certificate issued by DigiCert Inc (expired on October 26, 2024). Check other websites using SSL certificates issued by DigiCert Inc.

According to Google Safe Browsing, Google Safe Search and Symantec how2j.cn is quite a safe domain.

Mobile-Friendly test indicates that how2j.cn is well optimized for mobile and tablet devices.


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Alexa Rank shows how popular how2j.cn is in comparison with other sites. The most popular site has Alexa Rank equals 1. If how2j.cn 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 how2j.cn and pageviews on how2j.cn over the past 3 months.

Overview
Last Updated: 11/05/2024
Overall result - "how2j.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: 04/02/2024
how2j.cn is safe.

Norton ConnectSafe evaluates how2j.cn for any unsafe and insecure content. The results are critical for families with young children.

Google Safe Search
Last Updated: 01/12/2017
how2j.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 "how2j.cn".
"how2j.cn" is not a phishing page.
"how2j.cn" does not install unwanted software.
"how2j.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: 03/02/2021
how2j.cn is safe.

McAfee assesses how2j.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 how2j.cn for mature or inappropriate content, only security checks are evaluated.

Web of Trust
Last Updated: 11/05/2024
how2j.cn child safety isunknown.

The WOT calculates reputation of the how2j.cn. This reputation system receives ratings from users and information from third-party sources, assesses the how2j.cn for safety features and confirms, whether how2j.cn is suitable for children.

SSL Information
SSL Checker Tool
Domain how2j.cn
Issuer OrganizationDigiCert Inc
Issuer Encryption Everywhere DV TLS CA - G2
Algorithm RSA-SHA256
Valid form 07/28/2024
Expiration 10/26/2024
SignedCertificate is not self signed
Additional Domains how2j.cn
www.how2j.cn
Server Location
Geolocation Tool

Not Found

ASN Information
ASN Lookup Tool

ASN ID: 24429
ASN Title: TAOBAO Zhejiang Taobao Network Co.,Ltd, CN

Last Update: 03/08/2024

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

% Information related to 'AS23552 - AS24575'

as-block: AS23552 - AS24575
descr: APNIC ASN block
remarks: These AS numbers are further assigned by APNIC
remarks: to APNIC members and end-users in the APNIC region
remarks: AS23889 has been transfered to AfriNIC
admin-c: HM20-AP
tech-c: HM20-AP
mnt-by: APNIC-HM
mnt-lower: APNIC-HM
last-modified: 2009-09-29T06:04:16Z
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 'AS24401 - AS24430'

as-block: AS24401 - AS24430
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
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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 'AS24429'

% Abuse contact for 'AS24429' is 'ipas@cnnic.cn'

aut-num: AS24429
as-name: Taobao
descr: Zhejiang Taobao Network Co.,Ltd
descr: 2nd floor, Westlake International technology Building
descr: 391Wener Road, Hangzhou, China
country: CN
admin-c: ZM678-AP
tech-c: ZM877-AP
tech-c: ZM876-AP
tech-c: ZM875-AP
mnt-by: MAINT-CNNIC-AP
mnt-routes: MAINT-CNNIC-AP
mnt-irt: IRT-CNNIC-CN
last-modified: 2016-01-22T02:26:01Z
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: Shuo Yu
address: 5F, Builing D, the West Lake International Plaza of S&T
address: No.391 Wen'er Road, Hangzhou City
address: Zhejiang, China, 310099
country: CN
phone: +86-0571-85022600
fax-no: +86-0571-85022600
e-mail: shuo.yus@alibaba-inc.com
e-mail: shuo.yus@aliyun-inc.com
nic-hdl: ZM678-AP
mnt-by: MAINT-CNNIC-AP
last-modified: 2011-11-02T03:36:02Z
source: APNIC

person: Guoxin Gao
address: 5F, Builing D, the West Lake International Plaza of S&T
address: No.391 Wen'er Road, Hangzhou City
address: Zhejiang, China, 310099
country: CN
phone: +86-0571-85022600
fax-no: +86-0571-85022600
e-mail: anti-spam@list.alibaba-inc.com
nic-hdl: ZM875-AP
mnt-by: MAINT-CNNIC-AP
last-modified: 2014-07-30T01:56:01Z
source: APNIC

person: security trouble
e-mail: cloud-cc-sqcloud@list.alibaba-inc.com
address: 5th,floor,Building D,the West Lake International Plaza of S&T,391#Wen’er Road
address: Hangzhou, Zhejiang, China
phone: +86-0571-85022600
country: CN
mnt-by: MAINT-CNNIC-AP
nic-hdl: ZM876-AP
last-modified: 2013-07-08T02:56:02Z
source: APNIC

person: Guowei Pan
address: 5F, Builing D, the West Lake International Plaza of S&T
address: No.391 Wen'er Road, Hangzhou City
address: Zhejiang, China, 310099
country: CN
phone: +86-0571-85022088-30763
fax-no: +86-0571-85022600
e-mail: guowei.pangw@alibaba-inc.com
nic-hdl: ZM877-AP
mnt-by: MAINT-CNNIC-AP
last-modified: 2013-07-09T01:34:02Z
source: APNIC

% This query was served by the APNIC Whois Service version 1.88.15-46 (WHOIS-US3)

WHOIS
WHOIS Lookup Tool

Domain Name: how2j.cn
ROID: 20160307s10001s82549213-cn
Domain Status: ok
Registrant: 黄喜
Registrant Contact Email: 19769096@qq.com
Sponsoring Registrar: 阿里云计算有限公司（万网）
Name Server: dns9.hichina.com
Name Server: dns10.hichina.com
Registration Time: 2016-03-07 14:44:23
Expiration Time: 2025-03-07 14:44:23
DNSSEC: unsigned

DNS Records
DNS Lookup Tool
HostA RecordTTL
HostMX RecordPriorityTTL
HostNS RecordTTL
HostTXT RecordTTL
Desktop Page Insights Tool

Last tested: 05/05/2018

Desktop
Desktop Speed
90%
Desktop Resource Breakdown
Total Resources4
Number of Hosts2
Static Resources3
CSS Resources2
Mobile Page Insights Tool

Last tested: 05/23/2017

Mobile
Mobile Usability
67%
Mobile Speed
60%
Mobile Resource Breakdown
Total Resources76
Number of Hosts6
Static Resources72
JavaScript Resources3
CSS Resources2
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