AS3257 74.0.16.0/20 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 4094Addressable IPs: 409674.0.16.0/2474.0.17.0/2474.0.18.0/2474.0.19.0/2474.0.20.0/2474.0.21.0/2474.0.22.0/2474.0.23.0/2474.0.24.0/2474.0.25.0/2474.0.26.0/2474.0.27.0/2474.0.28.0/2474.0.29.0/2474.0.30.0/2474.0.31.0/24