AS1281 154.47.40.0/21 CIDR and IP Range Summary.ASN: 1281 - PSINet Inc.Host Count: 2046Addressable IPs: 2048154.47.40.0/24154.47.41.0/24154.47.42.0/24154.47.43.0/24154.47.44.0/24154.47.45.0/24154.47.46.0/24154.47.47.0/24