AS1281 154.27.152.0/21 CIDR and IP Range Summary.ASN: 1281 - PSINet Inc.Host Count: 2046Addressable IPs: 2048154.27.152.0/24154.27.153.0/24154.27.154.0/24154.27.155.0/24154.27.156.0/24154.27.157.0/24154.27.158.0/24154.27.159.0/24