AS7922 121.91.248.0/21 CIDR and IP Range Summary.ASN: 7922 - Comcast Cable Communications LLCHost Count: 2046Addressable IPs: 2048121.91.248.0/24121.91.249.0/24121.91.250.0/24121.91.251.0/24121.91.252.0/24121.91.253.0/24121.91.254.0/24121.91.255.0/24