AS1281 154.18.240.0/20 CIDR and IP Range Summary.ASN: 1281 - PSINet Inc.Host Count: 4094Addressable IPs: 4096154.18.240.0/24154.18.241.0/24154.18.242.0/24154.18.243.0/24154.18.244.0/24154.18.245.0/24154.18.246.0/24154.18.247.0/24154.18.248.0/24154.18.249.0/24154.18.250.0/24154.18.251.0/24154.18.252.0/24154.18.253.0/24154.18.254.0/24154.18.255.0/24