AS7018 12.133.16.0/20 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 4094Addressable IPs: 409612.133.16.0/2412.133.17.0/2412.133.18.0/2412.133.19.0/2412.133.20.0/2412.133.21.0/2412.133.22.0/2412.133.23.0/2412.133.24.0/2412.133.25.0/2412.133.26.0/2412.133.27.0/2412.133.28.0/2412.133.29.0/2412.133.30.0/2412.133.31.0/24