AS18494 74.4.152.0/21 CIDR and IP Range Summary.ASN: 18494 - CenturyLink Communications LLCHost Count: 2046Addressable IPs: 204874.4.152.0/2474.4.153.0/2474.4.154.0/2474.4.155.0/2474.4.156.0/2474.4.157.0/2474.4.158.0/2474.4.159.0/24