AS3257 216.133.112.0/20 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 4094Addressable IPs: 4096216.133.112.0/24216.133.113.0/24216.133.114.0/24216.133.115.0/24216.133.116.0/24216.133.117.0/24216.133.118.0/24216.133.119.0/24216.133.120.0/24216.133.121.0/24216.133.122.0/24216.133.123.0/24216.133.124.0/24216.133.125.0/24216.133.126.0/24216.133.127.0/24