AS17977 203.173.64.0/20 CIDR and IP Range Summary.ASN: 17977 - NF Park BLDG.3F 9-15 Futaba 2-ChomeHost Count: 4094Addressable IPs: 4096203.173.64.0/24203.173.65.0/24203.173.66.0/24203.173.67.0/24203.173.68.0/24203.173.69.0/24203.173.70.0/24203.173.71.0/24203.173.72.0/24203.173.73.0/24203.173.74.0/24203.173.75.0/24203.173.76.0/24203.173.77.0/24203.173.78.0/24203.173.79.0/24