AS7018 12.131.16.0/20 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 4094Addressable IPs: 409612.131.16.0/2412.131.17.0/2412.131.18.0/2412.131.19.0/2412.131.20.0/2412.131.21.0/2412.131.22.0/2412.131.23.0/2412.131.24.0/2412.131.25.0/2412.131.26.0/2412.131.27.0/2412.131.28.0/2412.131.29.0/2412.131.30.0/2412.131.31.0/24