IP库
北美ARIN:http://ftp.arin.net/pub/stats/arin/delegated-arin-extended-latest
欧洲RIPE:http://ftp.ripe.net/ripe/stats/delegated-ripencc-latest
非洲AFRINIC:http://ftp.afrinic.net/pub/stats/afrinic/delegated-afrinic-latest
亚太APNIC:http://ftp.apnic.net/pub/stats/apnic/delegated-apnic-latest
拉美:http://ftp.lacnic.net/pub/stats/lacnic/delegated-lacnic-latest