AS7018 206.19.248.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 2048206.19.248.0/24206.19.249.0/24206.19.250.0/24206.19.251.0/24206.19.252.0/24206.19.253.0/24206.19.254.0/24206.19.255.0/24