AS42580 81.20.240.0/20 CIDR and IP Range Summary.ASN: 42580 - NOS Acores Comunicacoes S.A.Host Count: 4094Addressable IPs: 409681.20.240.0/2481.20.241.0/2481.20.242.0/2481.20.243.0/2481.20.244.0/2481.20.245.0/2481.20.246.0/2481.20.247.0/2481.20.248.0/2481.20.249.0/2481.20.250.0/2481.20.251.0/2481.20.252.0/2481.20.253.0/2481.20.254.0/2481.20.255.0/24