Question: what are the private ipv4 address ranges?
Answer: 10.0. 0.0/8 IP addresses: 10.0. 0.0 – 10.255. 255.255. 172.16. 0.0/12 IP addresses: 172.16. 0.0 – 172.31. 255.255. 192.168. 0.0/16 IP addresses: 192.168. 0.0 – 192.168. 255.255.