works fine for me.
kofts-Computer:~ koft$ nslookup amigaworld.net
Note: nslookup is deprecated and may be removed from future releases.
Consider using the `dig' or `host' programs instead. Run nslookup with
the `-sil[ent]' option to prevent this message from appearing.
Server: 192.168.2.1
Address: 192.168.2.1#53
Non-authoritative answer:
Name: amigaworld.net
Address: 69.64.33.58
kofts-Computer:~ koft$ nslookup 69.64.33.58
Note: nslookup is deprecated and may be removed from future releases.
Consider using the `dig' or `host' programs instead. Run nslookup with
the `-sil[ent]' option to prevent this message from appearing.
Server: 192.168.2.1
Address: 192.168.2.1#53
Non-authoritative answer:
58.33.64.69.in-addr.arpa name =
www.amigaworld.net.
Authoritative answers can be found from:
33.64.69.in-addr.arpa nameserver = ns1.nameserverservice.com.
33.64.69.in-addr.arpa nameserver = ns2.nameserverservice.com.
ns1.nameserverservice.com internet address = 69.64.44.20
ns2.nameserverservice.com internet address = 217.172.191.8
try going directly to the ip instead, and see if that works, if it does, it's probably DNS problem.
