AS7018 206.171.16.0/20 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 4094Addressable IPs: 4096206.171.16.0/24206.171.17.0/24206.171.18.0/24206.171.19.0/24206.171.20.0/24206.171.21.0/24206.171.22.0/24206.171.23.0/24206.171.24.0/24206.171.25.0/24206.171.26.0/24206.171.27.0/24206.171.28.0/24206.171.29.0/24206.171.30.0/24206.171.31.0/24