AS1281 154.18.16.0/20 CIDR and IP Range Summary.ASN: 1281 - PSINet Inc.Host Count: 4094Addressable IPs: 4096154.18.16.0/24154.18.17.0/24154.18.18.0/24154.18.19.0/24154.18.20.0/24154.18.21.0/24154.18.22.0/24154.18.23.0/24154.18.24.0/24154.18.25.0/24154.18.26.0/24154.18.27.0/24154.18.28.0/24154.18.29.0/24154.18.30.0/24154.18.31.0/24