AS7018 209.77.16.0/20 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 4094Addressable IPs: 4096209.77.16.0/24209.77.17.0/24209.77.18.0/24209.77.19.0/24209.77.20.0/24209.77.21.0/24209.77.22.0/24209.77.23.0/24209.77.24.0/24209.77.25.0/24209.77.26.0/24209.77.27.0/24209.77.28.0/24209.77.29.0/24209.77.30.0/24209.77.31.0/24