AS1281 154.45.216.0/21 CIDR and IP Range Summary.ASN: 1281 - PSINet Inc.Host Count: 2046Addressable IPs: 2048154.45.216.0/24154.45.217.0/24154.45.218.0/24154.45.219.0/24154.45.220.0/24154.45.221.0/24154.45.222.0/24154.45.223.0/24