AS399 143.157.80.0/21 CIDR and IP Range Summary.ASN: 399 - 754th Electronic Systems GroupHost Count: 2046Addressable IPs: 2048143.157.80.0/24143.157.81.0/24143.157.82.0/24143.157.83.0/24143.157.84.0/24143.157.85.0/24143.157.86.0/24143.157.87.0/24