AS409 143.140.64.0/21 CIDR and IP Range Summary.ASN: 409 - 754th Electronic Systems GroupHost Count: 2046Addressable IPs: 2048143.140.64.0/24143.140.65.0/24143.140.66.0/24143.140.67.0/24143.140.68.0/24143.140.69.0/24143.140.70.0/24143.140.71.0/24