AS6128 47.19.56.0/21 CIDR and IP Range Summary.ASN: 6128 - CableVision Systems Corp.Host Count: 2046Addressable IPs: 204847.19.56.0/2447.19.57.0/2447.19.58.0/2447.19.59.0/2447.19.60.0/2447.19.61.0/2447.19.62.0/2447.19.63.0/24