AS397268 199.58.120.0/21 CIDR and IP Range Summary.ASN: 397268 - Cambridge TelephoneHost Count: 2046Addressable IPs: 2048199.58.120.0/24199.58.121.0/24199.58.122.0/24199.58.123.0/24199.58.124.0/24199.58.125.0/24199.58.126.0/24199.58.127.0/24