AS23 129.166.8.0/21 CIDR and IP Range Summary.ASN: 23 - National Aeronautics and Space AdministrationHost Count: 2046Addressable IPs: 2048129.166.8.0/24129.166.9.0/24129.166.10.0/24129.166.11.0/24129.166.12.0/24129.166.13.0/24129.166.14.0/24129.166.15.0/24