AS3923 152.123.8.0/21 CIDR and IP Range Summary.ASN: 3923 - Federal Aviation AdministrationHost Count: 2046Addressable IPs: 2048152.123.8.0/24152.123.9.0/24152.123.10.0/24152.123.11.0/24152.123.12.0/24152.123.13.0/24152.123.14.0/24152.123.15.0/24