something isn't resolving the DNS information into a server that's responding, or there's not web/HTML server at that address. nslookup shows

Non-authoritative answer:
Name: mukallatoday.com
Address: 96.0.96.142

is there an httpd server running there? is that DNS information correct?
if you registered the domain with one provider and then created your
web site somewhere else, the DNS information may be wrong.