AS7018 66.73.16.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204866.73.16.0/2466.73.17.0/2466.73.18.0/2466.73.19.0/2466.73.20.0/2466.73.21.0/2466.73.22.0/2466.73.23.0/24