AS3598 20.136.144.0/20 CIDR and IP Range Summary.ASN: 3598 - Microsoft CorporationHost Count: 4094Addressable IPs: 409620.136.144.0/2420.136.145.0/2420.136.146.0/2420.136.147.0/2420.136.148.0/2420.136.149.0/2420.136.150.0/2420.136.151.0/2420.136.152.0/2420.136.153.0/2420.136.154.0/2420.136.155.0/2420.136.156.0/2420.136.157.0/2420.136.158.0/2420.136.159.0/24