AS7018 37.19.64.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204837.19.64.0/2437.19.65.0/2437.19.66.0/2437.19.67.0/2437.19.68.0/2437.19.69.0/2437.19.70.0/2437.19.71.0/24