ftp://ftp.ripe.net/ripe/stats/delegated
ftp://ftp.arin.net/pub/stats/arin/delegated
ftp://ftp.lacnic.net/pub/stats/lacnic/delegated
ftp://ftp.apnic.net/pub/apnic/stats/apnic/delegated
ftp://ftp.afrinic.net/pub/stats/afrinic/delegated