AS1281 154.51.48.0/20 CIDR and IP Range Summary.ASN: 1281 - PSINet Inc.Host Count: 4094Addressable IPs: 4096154.51.48.0/24154.51.49.0/24154.51.50.0/24154.51.51.0/24154.51.52.0/24154.51.53.0/24154.51.54.0/24154.51.55.0/24154.51.56.0/24154.51.57.0/24154.51.58.0/24154.51.59.0/24154.51.60.0/24154.51.61.0/24154.51.62.0/24154.51.63.0/24