If you hear someone talking good words about their hosting provider and you know this website domain, you may use WHOIS lookup service to detect which web hosting particular website is using. Usual Whois records show who owns the website and which nameservers are configured to serve this domain.
There is also reverse IP lookup possibility which helps to retrieve a list of all domains using the same IP address. It is extremely useful if you need to check how many domains are hosted to the same server and sharing the same resources.
Shared hosting service means that there are many websites acommodated to the same physical server - all available disks, rapid access memory and network connections are shared among multiple sites. Sometimes it is good to know exactly how many websites are acommodated to a particular web hosting server and which type of websites they are.
Know more about your web hosting provider
The Internet has not always been as we know it to be today: "When packet switching networks were first developed, addressing was exclusively numerical. With networks such as The Advanced Research Projects Agency Network (ARPANET), there was little need for developing alternative methods as the number of participating nodes was limited."
The problem was that IP addresses like ‘220.127.116.11’ were great for technical addressing but very hard to remember. There was clearly need for more semantic address names besides sequence of just numbrs.
While looking solution for this semantic problem, domain names were written to file named ‘hosts.txt’ and it was distributed to all the nodes of the network, allowing them to map names to the addresses. The problem was that this kind centralized system updating was very difficult. There was need for more scalable and automated solution. Three decades ago, in 1982, the original system was replaced by the Domain Name System (DNS), which is a hierarchical distribution system that allows IP-addresses and domain names to be assigned to each other in both directions. This enables people to access ‘mydomain.com’, instead of its IP-address ‘18.104.22.168’.
Read more about network history and discover fully detailed information about your web hosting network. This site has also a great feature in the "Graph" tab to show which servers are connected and how.