AS1281 154.42.16.0/20 CIDR and IP Range Summary.ASN: 1281 - PSINet Inc.Host Count: 4094Addressable IPs: 4096154.42.16.0/24154.42.17.0/24154.42.18.0/24154.42.19.0/24154.42.20.0/24154.42.21.0/24154.42.22.0/24154.42.23.0/24154.42.24.0/24154.42.25.0/24154.42.26.0/24154.42.27.0/24154.42.28.0/24154.42.29.0/24154.42.30.0/24154.42.31.0/24