Network challenges

Solution of Info5

Find the network range and the owner of the range of!

Using the whois protocol, we can find the basing information of the website, registrar information, server information, etc. One of the options is to use online whois tools such as

Previous DNS related tasks has shown some .no ending domains and e-mail addresses, so we can suspect there is a European connection here.

With nslookup command we can find the IP address of this website, which is As we can suspect, the page tells us that the network range owner is from Europe, we have to check in the European RIPE database ( ). If we type the IP address to RIPE’s seachbar, we can find the IP range easily, which is - The responsible organization is Uninett AS in Norway.