AS1281 154.56.152.0/21 CIDR and IP Range Summary.ASN: 1281 - PSINet Inc.Host Count: 2046Addressable IPs: 2048154.56.152.0/24154.56.153.0/24154.56.154.0/24154.56.155.0/24154.56.156.0/24154.56.157.0/24154.56.158.0/24154.56.159.0/24