AS688 140.215.240.0/21 CIDR and IP Range Summary.ASN: 688 - Department of InteriorHost Count: 2046Addressable IPs: 2048140.215.240.0/24140.215.241.0/24140.215.242.0/24140.215.243.0/24140.215.244.0/24140.215.245.0/24140.215.246.0/24140.215.247.0/24