AS19855 64.138.128.0/21 CIDR and IP Range Summary.ASN: 19855 - Masergy Communications Inc.Host Count: 2046Addressable IPs: 204864.138.128.0/2464.138.129.0/2464.138.130.0/2464.138.131.0/2464.138.132.0/2464.138.133.0/2464.138.134.0/2464.138.135.0/24