AS2648 137.75.232.0/21 CIDR and IP Range Summary.ASN: 2648 - National Oceanic and Atmospheric AdministrationHost Count: 2046Addressable IPs: 2048137.75.232.0/24137.75.233.0/24137.75.234.0/24137.75.235.0/24137.75.236.0/24137.75.237.0/24137.75.238.0/24137.75.239.0/24