Quiz ID code: D937734528
Which one of the following prefixes matches 144.106.240.231?
Which one of the following prefixes matches both 126.26.8.104 and 126.26.13.31?
Which one of the following address prefixes contains 191.168.224/20?
Enter an address prefix that matches 74.149.28.104:
Enter an address that matches 130.66.192/21: