AS3257 74.199.168.0/21 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 2046Addressable IPs: 204874.199.168.0/2474.199.169.0/2474.199.170.0/2474.199.171.0/2474.199.172.0/2474.199.173.0/2474.199.174.0/2474.199.175.0/24