21cn.com Website Review
21cn.com - Basic Information
21cn.com - Site Security
McAfee SiteAdvisor:
Norton Safe Web:
21cn.com - Social (SNS)
Delicious:
Unknown
Stumbleupon:
37
Facebook Likes:
0
Twitter Tweets:
Unknown
Google Plus Likes:
37
21cn.com - Page Information
Title:
21CN
Length: 4 character(s); Best length: 10 ~ 60 character(s)
Meta keywords:
21CN,新闻,财经,娱乐,体育,汽车,房产,游戏,生活,科技,邮箱,手机网,云存储,看荐
Length: 45 character(s)
Meta description:
21CN是中国电信全资子公司，中国最早的互联网企业之一，近年来致力于移动互联网和云计算领域的产品研发，为个人与企业提供媒体资讯、电子邮箱、移动应用与云存储等方面的服务
Length: 83 character(s); Best length: 50 ~ 160 character(s)
H1:
Unknown
Length: 0 character(s)
Internal links:
0 (0 nofollow)
External links:
227 (0 nofollow)
21cn.com - Traffic Rank
Alexa Traffic Graphs:
| Daily Global Rank Trend (6 Months) |
Daily Global Rank Trend (2 Years) |
Daily Pageview per User | Daily Reach | Search Visits |
|
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Compete Traffic Graphs: Unique Vistors:
21cn.com - Site Technology
Server:
nginx/1.12.0
SSL Secure:
Unavailable
robots.txt:
Unavailable
XML Sitemap:
Unavailable
Gzip Compress:
Available
Favicon.ico:
Unavailable
21cn.com - HTTP Header Analysis
HTTP header fields are components of the message header of requests and responses in the Hypertext Transfer Protocol (HTTP). They define the operating parameters of an HTTP transaction. The header fields are not directly displayed by normal web browsers like Internet Explorer, Google Chrome, Firefox etc. Below is the HTTP Header information of 21cn.com:
HTTP/1.1 200 OK
Server: nginx/1.12.0
Date: Sun, 13 Aug 2017 15:17:42 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: keep-alive
Vary: Accept-Encoding
Expires: Sun, 13 Aug 2017 15:25:50 GMT
Cache-Control: max-age=600
Age: 112
X-Cache: HIT from dg195.cache.21cn.com
X-Cache-Lookup: HIT from dg195.cache.21cn.com:84
Front-Server: 195
Content-Encoding: gzip
Server: nginx/1.12.0
Date: Sun, 13 Aug 2017 15:17:42 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: keep-alive
Vary: Accept-Encoding
Expires: Sun, 13 Aug 2017 15:25:50 GMT
Cache-Control: max-age=600
Age: 112
X-Cache: HIT from dg195.cache.21cn.com
X-Cache-Lookup: HIT from dg195.cache.21cn.com:84
Front-Server: 195
Content-Encoding: gzip
21cn.com - DNS Record Analysis
Domain Name Systes (DNS) translates easily memorized domain names to the numerical IP addresses needed for the purpose of locating computer services and devices worldwide. There are total 5 DNS record(s) of 21cn.com.
| Host | Type | IP/Target | TTL | Extra Infomation |
|---|---|---|---|---|
| 21cn.com | A | 600 | ||
| 21cn.com | MX | 2768 | pri: 10 | |
| 21cn.com | NS | 300 | ||
| 21cn.com | SOA | 36000 | expire: 36000 serial: 2016090101 | |
| 21cn.com | TXT | v=spf1 include:mail-spf.21cn.com ip4:52.8.52.154 ip4:52.8.239.192 ip4:52.74.103.30 ip4:52.74.147.196 -all | 3600 | |