AS8030 192.20.128.0/21 CIDR and IP Range Summary.ASN: 8030 - AT&T WorldNetHost Count: 2046Addressable IPs: 2048192.20.128.0/24192.20.129.0/24192.20.130.0/24192.20.131.0/24192.20.132.0/24192.20.133.0/24192.20.134.0/24192.20.135.0/24