AS1281 154.52.144.0/20 CIDR and IP Range Summary.ASN: 1281 - PSINet Inc.Host Count: 4094Addressable IPs: 4096154.52.144.0/24154.52.145.0/24154.52.146.0/24154.52.147.0/24154.52.148.0/24154.52.149.0/24154.52.150.0/24154.52.151.0/24154.52.152.0/24154.52.153.0/24154.52.154.0/24154.52.155.0/24154.52.156.0/24154.52.157.0/24154.52.158.0/24154.52.159.0/24