AS7018 12.237.16.0/20 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 4094Addressable IPs: 409612.237.16.0/2412.237.17.0/2412.237.18.0/2412.237.19.0/2412.237.20.0/2412.237.21.0/2412.237.22.0/2412.237.23.0/2412.237.24.0/2412.237.25.0/2412.237.26.0/2412.237.27.0/2412.237.28.0/2412.237.29.0/2412.237.30.0/2412.237.31.0/24