AS6407 216.181.240.0/21 CIDR and IP Range Summary.ASN: 6407 - Primus Telecommunications Canada Inc.Host Count: 2046Addressable IPs: 2048216.181.240.0/24216.181.241.0/24216.181.242.0/24216.181.243.0/24216.181.244.0/24216.181.245.0/24216.181.246.0/24216.181.247.0/24