AS174 154.21.0.0/21 CIDR and IP Range Summary.ASN: 174 - Cogent CommunicationsHost Count: 2046Addressable IPs: 2048154.21.0.0/24154.21.1.0/24154.21.2.0/24154.21.3.0/24154.21.4.0/24154.21.5.0/24154.21.6.0/24154.21.7.0/24