AS1281 154.45.144.0/20 CIDR and IP Range Summary.ASN: 1281 - PSINet Inc.Host Count: 4094Addressable IPs: 4096154.45.144.0/24154.45.145.0/24154.45.146.0/24154.45.147.0/24154.45.148.0/24154.45.149.0/24154.45.150.0/24154.45.151.0/24154.45.152.0/24154.45.153.0/24154.45.154.0/24154.45.155.0/24154.45.156.0/24154.45.157.0/24154.45.158.0/24154.45.159.0/24