21cn.com Website Review
21cn.com - Basic Information
21cn.com - Page Information
Title:
21CNMeta 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H1:
UnknownInternal links:
0 (0 nofollow)External links:
159 (0 nofollow)21cn.com - Site Technology
Server:
nginx/1.13.3
SSL Secure:
Unavailablerobots.txt:
UnavailableXML Sitemap:
UnavailableGzip Compress:
Availablefavicon.ico:
Unavailable21cn.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/1.13.3
Date: Tue, 06 Mar 2018 07:33:33 GMT
Content-Type: text/html; charset=utf-8
Transfer-Encoding: chunked
Connection: keep-alive
Vary: Accept-Encoding
Expires: Tue, 06 Mar 2018 07:43:33 GMT
Cache-Control: max-age=600
X-Cache: MISS from dg195.cache.21cn.com
Front-Server: 195
Content-Encoding: gzip
Server: nginx/1.13.3
Date: Tue, 06 Mar 2018 07:33:33 GMT
Content-Type: text/html; charset=utf-8
Transfer-Encoding: chunked
Connection: keep-alive
Vary: Accept-Encoding
Expires: Tue, 06 Mar 2018 07:43:33 GMT
Cache-Control: max-age=600
X-Cache: MISS from dg195.cache.21cn.com
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 7 DNS record(s) of 21cn.com.
| Host | Type | IP/Target | TTL | Extra Infomation |
|---|---|---|---|---|
| 21cn.com | A | 600 | ||
| 21cn.com | A | 600 | ||
| 21cn.com | NS | 300 | ||
| 21cn.com | NS | 300 | ||
| 21cn.com | SOA | 600 | expire: 86400 serial: 2020031813 | |
| 21cn.com | MX | 3600 | pri: 10 | |
| 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 |