AS3257 68.64.144.0/20 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 4094Addressable IPs: 409668.64.144.0/2468.64.145.0/2468.64.146.0/2468.64.147.0/2468.64.148.0/2468.64.149.0/2468.64.150.0/2468.64.151.0/2468.64.152.0/2468.64.153.0/2468.64.154.0/2468.64.155.0/2468.64.156.0/2468.64.157.0/2468.64.158.0/2468.64.159.0/24