AS30356 167.242.224.0/21 CIDR and IP Range Summary.ASN: 30356 - Blue Cross Blue Shield Of Michigan Mutual InsuranceHost Count: 2046Addressable IPs: 2048167.242.224.0/24167.242.225.0/24167.242.226.0/24167.242.227.0/24167.242.228.0/24167.242.229.0/24167.242.230.0/24167.242.231.0/24