AS1281 154.57.192.0/21 CIDR and IP Range Summary.ASN: 1281 - PSINet Inc.Host Count: 2046Addressable IPs: 2048154.57.192.0/24154.57.193.0/24154.57.194.0/24154.57.195.0/24154.57.196.0/24154.57.197.0/24154.57.198.0/24154.57.199.0/24