AS1281 154.6.16.0/21 CIDR and IP Range Summary.ASN: 1281 - PSINet Inc.Host Count: 2046Addressable IPs: 2048154.6.16.0/24154.6.17.0/24154.6.18.0/24154.6.19.0/24154.6.20.0/24154.6.21.0/24154.6.22.0/24154.6.23.0/24