AS1281 154.48.168.0/21 CIDR and IP Range Summary.ASN: 1281 - PSINet Inc.Host Count: 2046Addressable IPs: 2048154.48.168.0/24154.48.169.0/24154.48.170.0/24154.48.171.0/24154.48.172.0/24154.48.173.0/24154.48.174.0/24154.48.175.0/24