AS1640 208.56.128.0/19 CIDR and IP Range Summary.ASN: 1640 - Thacker-Grigsby CommunicationsHost Count: 8190Addressable IPs: 8192208.56.128.0/24208.56.129.0/24208.56.130.0/24208.56.131.0/24208.56.132.0/24208.56.133.0/24208.56.134.0/24208.56.135.0/24208.56.136.0/24208.56.137.0/24208.56.138.0/24208.56.139.0/24208.56.140.0/24208.56.141.0/24208.56.142.0/24208.56.143.0/24208.56.144.0/24208.56.145.0/24208.56.146.0/24208.56.147.0/24208.56.148.0/24208.56.149.0/24208.56.150.0/24208.56.151.0/24208.56.152.0/24208.56.153.0/24208.56.154.0/24208.56.155.0/24208.56.156.0/24208.56.157.0/24208.56.158.0/24208.56.159.0/24