AS1640 199.116.152.0/21 CIDR and IP Range Summary.ASN: 1640 - Thacker-Grigsby CommunicationsHost Count: 2046Addressable IPs: 2048199.116.152.0/24199.116.153.0/24199.116.154.0/24199.116.155.0/24199.116.156.0/24199.116.157.0/24199.116.158.0/24199.116.159.0/24