AS3257 135.196.80.0/21 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 2046Addressable IPs: 2048135.196.80.0/24135.196.81.0/24135.196.82.0/24135.196.83.0/24135.196.84.0/24135.196.85.0/24135.196.86.0/24135.196.87.0/24