whois Get all IP ranges for a given ASN 1 2 3 4 5 6 7$ whois -h whois.radb.net -- '-i origin AS16276' | grep "^route" route: 2.57.18.0/24 route: 2.57.18.0/24 route: 2.57.242.0/24 route: 5.39.0.0/17 route: 5.83.153.0/24 ... Source