AS396835 140.102.248.0/21 CIDR and IP Range Summary.ASN: 396835 - The Charles Stark Draper Laboratory Inc.Host Count: 2046Addressable IPs: 2048140.102.248.0/24140.102.249.0/24140.102.250.0/24140.102.251.0/24140.102.252.0/24140.102.253.0/24140.102.254.0/24140.102.255.0/24