AS1281 154.50.216.0/21 CIDR and IP Range Summary.ASN: 1281 - PSINet Inc.Host Count: 2046Addressable IPs: 2048154.50.216.0/24154.50.217.0/24154.50.218.0/24154.50.219.0/24154.50.220.0/24154.50.221.0/24154.50.222.0/24154.50.223.0/24