AS1281 154.63.48.0/20 CIDR and IP Range Summary.ASN: 1281 - PSINet Inc.Host Count: 4094Addressable IPs: 4096154.63.48.0/24154.63.49.0/24154.63.50.0/24154.63.51.0/24154.63.52.0/24154.63.53.0/24154.63.54.0/24154.63.55.0/24154.63.56.0/24154.63.57.0/24154.63.58.0/24154.63.59.0/24154.63.60.0/24154.63.61.0/24154.63.62.0/24154.63.63.0/24