AS11712 139.76.8.0/21 CIDR and IP Range Summary.ASN: 11712 - AT&T Services Inc.Host Count: 2046Addressable IPs: 2048139.76.8.0/24139.76.9.0/24139.76.10.0/24139.76.11.0/24139.76.12.0/24139.76.13.0/24139.76.14.0/24139.76.15.0/24