AS7018 204.146.144.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 2048204.146.144.0/24204.146.145.0/24204.146.146.0/24204.146.147.0/24204.146.148.0/24204.146.149.0/24204.146.150.0/24204.146.151.0/24