How do DNS servers work/regulate ? just curious

[cs.punk]

Well uhm... If i understand correctly all a DNS server  does is manage a table semthing like this:

• 1.0.0.0 > website1.com
  
• 1.0.0.1 > website2.com
  

 

So where do .com . net . co.uk etc come in? Who regulates them?

[ignace]

www.google.com is a human-friendly version of an IP-address in order to translate www.google.com to an IP-address it uses reverse DNS lookup. To do that it reverses the URL and prepends a dot and asks their DNS server for the IP-address (every server in the network knows atleast one DNS server)

 

.com.google.www

 

A URL is normally www.google.com. but the extra dot in the end is optional and your browser will append it (http://www.google.com./)

 

The first dot refers to the root-servers (ARPA) and they have the IP-addresses of every top-level domain server (com, be, net, org, ..) these individual top-level domains have the IP-address of every domain (google, phpfreaks, ..) these in turn have the IP-address of the actual server (www, www2, www3, ..) it's also possible to add more and get an URL like:

 

ignace.developers.community.mazeltov.forum.domain.com

 

You find these URL in academic communities but are rarely used by companies as an internet address (intranet is possible) due to usability reasons (to hard to remember).

[Daniel0]

Just some nitpicking:

 

www.google.com is a human-friendly version of an IP-address in order to translate www.google.com to an IP-address it uses reverse DNS lookup. To do that it reverses the URL and prepends a dot and asks their DNS server for the IP-address (every server in the network knows atleast one DNS server)

 

.com.google.www

 

A reverse DNS (rDNS) lookup is actually something different. Essentially it's going from IP->domain instead of domain->IP.

 

A URL is normally www.google.com. but the extra dot in the end is optional and your browser will append it (http://www.google.com./)

 

Not a URL, but a domain name. They're different concepts.

 

The first dot refers to the root-servers (ARPA) [...]

 

The dot is the separator. The root-servers are represented by the void after the dot. So essentially google.com.[root] if we were to replace it with something else.