AS7917 168.183.72.0/21 CIDR and IP Range Summary.ASN: 7917 - UnitedHealth Group IncorporatedHost Count: 2046Addressable IPs: 2048168.183.72.0/24168.183.73.0/24168.183.74.0/24168.183.75.0/24168.183.76.0/24168.183.77.0/24168.183.78.0/24168.183.79.0/24