AS3257 216.132.240.0/20 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 4094Addressable IPs: 4096216.132.240.0/24216.132.241.0/24216.132.242.0/24216.132.243.0/24216.132.244.0/24216.132.245.0/24216.132.246.0/24216.132.247.0/24216.132.248.0/24216.132.249.0/24216.132.250.0/24216.132.251.0/24216.132.252.0/24216.132.253.0/24216.132.254.0/24216.132.255.0/24