AS17989 143.58.16.0/21 CIDR and IP Range Summary.ASN: 17989 - 16th - 19th FloorsHost Count: 2046Addressable IPs: 2048143.58.16.0/24143.58.17.0/24143.58.18.0/24143.58.19.0/24143.58.20.0/24143.58.21.0/24143.58.22.0/24143.58.23.0/24