AS4465 199.37.184.0/21 CIDR and IP Range Summary.ASN: 4465 - AT&T Services Inc.Host Count: 2046Addressable IPs: 2048199.37.184.0/24199.37.185.0/24199.37.186.0/24199.37.187.0/24199.37.188.0/24199.37.189.0/24199.37.190.0/24199.37.191.0/24