AS1281 154.56.16.0/20 CIDR and IP Range Summary.ASN: 1281 - PSINet Inc.Host Count: 4094Addressable IPs: 4096154.56.16.0/24154.56.17.0/24154.56.18.0/24154.56.19.0/24154.56.20.0/24154.56.21.0/24154.56.22.0/24154.56.23.0/24154.56.24.0/24154.56.25.0/24154.56.26.0/24154.56.27.0/24154.56.28.0/24154.56.29.0/24154.56.30.0/24154.56.31.0/24