AS1281 154.57.48.0/20 CIDR and IP Range Summary.ASN: 1281 - PSINet Inc.Host Count: 4094Addressable IPs: 4096154.57.48.0/24154.57.49.0/24154.57.50.0/24154.57.51.0/24154.57.52.0/24154.57.53.0/24154.57.54.0/24154.57.55.0/24154.57.56.0/24154.57.57.0/24154.57.58.0/24154.57.59.0/24154.57.60.0/24154.57.61.0/24154.57.62.0/24154.57.63.0/24