Looking for a source to find out Australian ISP end user IP Ranges - Home internet ips etc for example *.static.tpgi.com.au or *.tpgi.com.au has both end user and CND ip addresses. i would like to block all end user ip ranges but not block CND's etc indent preformatted text by 4 spaces interested in how you would go about this task. below is a range i blocked as i thought it was an ip range for home internet but as you can see its facebook CDN. *@pop-os:~$ nslookup external.fsyd3-1.fna.fbcdn.net Server: 127.0.0.53 Address: 127.0.0.53#53 Non-authoritative answer: external.fsyd3-1.fna.fbcdn.net canonical name = scontent.fsyd3-1.fna.fbcdn.net. Name: scontent.fsyd3-1.fna.fbcdn.net Address: 203.219.59.81 Name: scontent.fsyd3-1.fna.fbcdn.net Address: 2407:8800:bf00:33:face:b00c:0:a7 ****************************************** dig -x 203.219.59.81 +short 203-219-59-81.tpgi.com.au. ****************************************