AS3257 217.206.192.0/20 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 4094Addressable IPs: 4096217.206.192.0/24217.206.193.0/24217.206.194.0/24217.206.195.0/24217.206.196.0/24217.206.197.0/24217.206.198.0/24217.206.199.0/24217.206.200.0/24217.206.201.0/24217.206.202.0/24217.206.203.0/24217.206.204.0/24217.206.205.0/24217.206.206.0/24217.206.207.0/24