AS7018 172.10.16.0/20 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 4094Addressable IPs: 4096172.10.16.0/24172.10.17.0/24172.10.18.0/24172.10.19.0/24172.10.20.0/24172.10.21.0/24172.10.22.0/24172.10.23.0/24172.10.24.0/24172.10.25.0/24172.10.26.0/24172.10.27.0/24172.10.28.0/24172.10.29.0/24172.10.30.0/24172.10.31.0/24