亚太地区网络信息记录在这里,每天都有更新。
http://ftp.apnic.net/apnic/stats/apnic/delegated-apnic-latest
下面这个脚本将对这段文本进行编辑,输出国内几大运营商网段。
代码如下:
#!/bin/sh
#auto get the IP Table
#get the newest delegated-apnic-latest
rm delegated-apnic-latestif type wget
then wget http://ftp.apnic.net/apnic/stats/apnic/delegated-apnic-latest
else fetch http://ftp.apnic.net/apnic/stats/apnic/delegated-apnic-latest
fi
grep apnic|CN|ipv4 delegated-apnic-latest | cut -f 4,5 -d | | tr | | while read ip cnt
do
mask=$(bc <
pow=32;
define log2(x) {
if (x<=1) return (pow);
pow–;
return(log2(x/2));
}
log2($cnt);
END
)
echo $ip/$mask;>>cnnetresultext=`whois $ip@whois.apnic.net | grep -e ^netname -e ^descr -e ^role -e ^mnt-by | cut -f 2 -d : | sed s/ *//`
if echo $resultext | grep -i -e railcom -e crtc -e railway
then echo $ip/$mask; >> crc
elif echo $resultext | grep -i -e cncgroup -e netcom
then echo $ip/$mask; >> cnc
elif echo $resultext | grep -i -e chinanet -e chinatel
then echo $ip/$mask; >> telcom_acl
elif echo $resultext | grep -i -e unicom
then echo $ip/$mask; >> unicom
elif echo $resultext | grep -i -e cmnet
then echo $ip/$mask; >> cmnet
else
echo $ip/$mask; >> other_acl
fidone
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