AS3257 74.199.128.0/19 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 8190Addressable IPs: 819274.199.128.0/2474.199.129.0/2474.199.130.0/2474.199.131.0/2474.199.132.0/2474.199.133.0/2474.199.134.0/2474.199.135.0/2474.199.136.0/2474.199.137.0/2474.199.138.0/2474.199.139.0/2474.199.140.0/2474.199.141.0/2474.199.142.0/2474.199.143.0/2474.199.144.0/2474.199.145.0/2474.199.146.0/2474.199.147.0/2474.199.148.0/2474.199.149.0/2474.199.150.0/2474.199.151.0/2474.199.152.0/2474.199.153.0/2474.199.154.0/2474.199.155.0/2474.199.156.0/2474.199.157.0/2474.199.158.0/2474.199.159.0/24