Final answer:
The IP addresses set aside for a private intranet are known as Private IP Addresses. These are not routable on the public internet and are used within private networks.
Step-by-step explanation:
The IP addresses set aside for use in a private intranet are d. Private IP Addresses. They are not routable on the public internet, which means these IP addresses can only be used within a private network and have to be mapped to public IP addresses for outside communication. The main ranges of private IP addresses designated by the Internet Assigned Numbers Authority (IANA) are 10.0.0.0 to 10.255.255.255, 172.16.0.0 to 172.31.255.255, and 192.168.0.0 to 192.168.255.255. These addresses are commonly used in home networks, office intranets, and other internal networks to assign to devices such as computers, printers, and IoT devices.