As per functioning of DNS, typing the domain should redirect me to the actual website. But when I have tried typing the actual web IP address of some sites, my Firefox 15 shows “The connection has timed out. The server at 18.104.22.168 is taking too long to respond” ( 22.214.171.124 is the IP of Makeuseof.com).
I have tried switching between Google DNS and My ISP DNS. I have tried visiting various Websites IP by http://webipaddress.net/ I have tried many other websites, but only few of them responded
Please let me know problem behind the issue and through some light on the inner functioning..