AS521 19.12.40.0/21 CIDR and IP Range Summary.ASN: 521 - Ford Motor CompanyHost Count: 2046Addressable IPs: 204819.12.40.0/2419.12.41.0/2419.12.42.0/2419.12.43.0/2419.12.44.0/2419.12.45.0/2419.12.46.0/2419.12.47.0/24