AS51964 57.68.56.0/21 CIDR and IP Range Summary.ASN: 51964 - Orange Business Services U.S. Inc.Host Count: 2046Addressable IPs: 204857.68.56.0/2457.68.57.0/2457.68.58.0/2457.68.59.0/2457.68.60.0/2457.68.61.0/2457.68.62.0/2457.68.63.0/24