AS1281 154.53.216.0/21 CIDR and IP Range Summary.ASN: 1281 - PSINet Inc.Host Count: 2046Addressable IPs: 2048154.53.216.0/24154.53.217.0/24154.53.218.0/24154.53.219.0/24154.53.220.0/24154.53.221.0/24154.53.222.0/24154.53.223.0/24