AS1281 154.40.144.0/20 CIDR and IP Range Summary.ASN: 1281 - PSINet Inc.Host Count: 4094Addressable IPs: 4096154.40.144.0/24154.40.145.0/24154.40.146.0/24154.40.147.0/24154.40.148.0/24154.40.149.0/24154.40.150.0/24154.40.151.0/24154.40.152.0/24154.40.153.0/24154.40.154.0/24154.40.155.0/24154.40.156.0/24154.40.157.0/24154.40.158.0/24154.40.159.0/24