An IP address is a 32-bit numerical call normally expressed as four numbers from 0-255 separated by dots, for instance 192.168.0.123. Each computer linked to the Internet is assigned an equalled IP Address for the functions of communication. There are billions of addresses conceivable, all the same, the number is finite.
In the Web host manufacture there are 2 features of IP address:
Dedicated IP address (also claim Static IP) means that a site has its own IP address. Whether you type in your URL or the numerical form of its IP address, both will bring you to the same domain.
Shared IP address means that multiple websites apportion the same address. Web servers can determine by the domain get in a user’s browser which website is being requested.
Typing in the IP address will bring you to several rather generic page instead of the particular website you need.
Due to the speedy addition of the number of recorded domain names and the finite number of IP addresses, Web hosting providers are pushed to apply shared IP’s when possible. In point of fact, hundreds of websites frequently share the same address. Dedicated IP web hosting is no more the norm and usually costs more.
Who Needs a Dedicated IP Address
Generally, having a website on a shared IP address won’t cause you any harm. All the same, there are several cases when a dedicated IP is required:
SSL certificate: SSL is required in e-commerce site for admitting credit cards online, and data will be encoded and transmitted between web server and user’s browser. Since the SSL protocal/encryption happens before the exchange of the HTTP header and it applies IP to identify the web site. So, in order or setup a SSL certificate onto a web site or domain, the domain must be configured with a dedicated IP.
Anonymous FTP: Anonymous File Transfer Protocol is used to let visitors download files from web server by FTP without having to provide user name & password. In order to enable the anonymous FTP, the domain must be designed with a dedicated IP.
Dedicated IP and Search Engines
There are several well-known argue in Search Engine Optimization industry about whether we require to offer a dedicated IP for your web site, and separate of them is reliable before but not true now, and part of them are still applicative now.
People may say a site with dedicated IP can do better in SEO than shared IP web site. This may be true before, but based on latest research, there should be no affect. As you know, Search Engine think more and more on the content of the web site, dedicated IP or not dedicated IP is actually not essential to them.
Dedicated IP may protect you from being banned by Search Engine. This might sound adjust since if a site scam the search engine, search engine might punish the site by banning all the request from that IP, so that entire the site with equal IP will not work in the search engine. But right now, the majority of websites on the Web are hosted via shared IP, it would be profitless to search engines to penalize a site based on IP.
Then, search engines are able to ban anything on a domain name instead of an all IP neighborhood and your site will be in safe.
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