AS1281 154.42.168.0/21 CIDR and IP Range Summary.ASN: 1281 - PSINet Inc.Host Count: 2046Addressable IPs: 2048154.42.168.0/24154.42.169.0/24154.42.170.0/24154.42.171.0/24154.42.172.0/24154.42.173.0/24154.42.174.0/24154.42.175.0/24