小編今天就要來分享如何取得各國的IPV4 IP網段。

下列資訊會使用到國家英文代碼，想查詢各國英文代碼的朋友可以參考下列網址：
https://ailog.tw/lifelog/2023/03/05/country-id-name/

［方法一］
在APNIC網站下載各國IP網段完政資訊。
文字檔下載網址：
http://ftp.apnic.net/apnic/stats/apnic/delegated-apnic-latest

從本網站下載(2023年3月份版本)：
https://ailog.tw/lifelog/wp-content/uploads/2023/03/delegated-apnic-latest.txt

在Linux平台上過濾出想要獲得的IP資訊：
01、先將檔案取回至Linux作業系統上
使用wget下載檔案，語法如下：
wget http://ftp.apnic.net/apnic/stats/apnic/delegated-apnic-latest

02、過濾出指定國家的IP資訊
例如要過濾出日本的IP資訊，語法如下：
cat delegated-apnic-latest | grep “JP”

如果要指定只顯示出IPV4的資訊的話，語法如下：
cat delegated-apnic-latest | grep “JP” | grep “ipv4”

資料列表說明：
apnic|JP|ipv4|1.0.16.0|4096|20110412|allocated
apnic:
亞太網路資訊中心，全球五大區域性網際網路註冊管理機構之一

JP:
日本的國家簡碼

ipv4:
IP第4版的格式

1.0.16.0:
IP網段

4096:
該網段的IP總數

20110412:
IP分配日期

allocated
=代表IP是分配取得

如果要將過濾出來的資訊另存成新的檔案，語法如下：
cat delegated-apnic-latest | grep “JP” | grep “ipv4” > jpipv4.txt

語法說明：
> jpipv4.txt : 意思是將查詢的結果轉出到jpipv4.txt這個文字檔。

如果要將過濾出來的IP轉換成CIDR的表示方式，語法如下：
cat delegated-apnic-latest | grep “JP” | grep “ipv4” | awk -F ‘|’ ‘{print $4 “/” 32-log($5)/log(2)}’


awk -F ‘|’ ‘{print $4 “/” 32-log($5)/log(2)}語法說明：
說明範例資料：
apnic|JP|ipv4|1.0.16.0|4096|20110412|allocated

(1)、 awk -F ‘|’ ‘{print $4 “/” 32-log($5)/log(2)}，其中的「-F ‘|’」意思是要以「|」做為分隔符號，接著「$4」意思是要取第4個數值所以是「1.0.16.0」，「$5」意思是要取第5個數值所以是「4096」。

(2)、 awk -F ‘|’ ‘{print $4 “/” 32-log($5)/log(2)}，其中的「log($5)/log(2)」意思是要計算4096是2的幾次方，答案是2的「12」次方，這個數值也代表是Subnet Bits。

補充：
在Linux console計算4096是2的幾次方：
echo “4096” | awk ‘{print log($1)/log(2)}’

(3)、 awk -F ‘|’ ‘{print $4 “/” 32-log($5)/log(2)}，其中用「32」去減Subnet Bits的數值「12」是要取出Mask Bits的數值「20」。

最後將日本的IPV4 IP網段轉出成「jpipv4-cidr.txt」文字檔。
cat delegated-apnic-latest | grep “JP” | grep “ipv4” | awk -F ‘|’ ‘{print $4 “/” 32-log($5)/log(2)}’ > jpipv4-cidr.txt

［方法二］
去「www.ipdeny.com」官網去下載已經整理好的各國IP資訊。

各國IP網段下載網址(該網址所提供的資料均是CIDR 格式)：
https://www.ipdeny.com/ipblocks/

各國IPV4資訊：
https://www.ipdeny.com/ipblocks/data/countries/all-zones.tar.gz

各國IPV4資訊(本網站下載連結，2023年3月份版本)：
https://ailog.tw/lifelog/wp-content/uploads/2023/03/all-zones.zip

各國IPV6資訊：
https://www.ipdeny.com/ipv6/ipaddresses/blocks/ipv6-all-zones.tar.gz

各國IPV6資訊(本網站下載連結，2023年3月份版本)：
https://ailog.tw/lifelog/wp-content/uploads/2023/03/all-zones.zip

網站有提供IP網段彙整的資料，應用在防火牆或其他資安阻擋機制上可減少比對的筆數，藉此來提升運作的效能。

各國經過彙整的IP網段資訊列表：
https://www.ipdeny.com/ipblocks/data/aggregated/

1.160.0.0/255.240.0.0(12)
1.200.0.0/255.255.0.0(16)
1.34.0.0/255.254.0.0(15)
101.0.128.0/255.255.192.0(18)
101.0.192.0/255.255.224.0(19)
101.0.224.0/255.255.224.0(19)
101.136.0.0/255.252.0.0(14)
101.3.0.0/255.255.0.0(16)
101.8.0.0/255.248.0.0(13)
103.10.4.0/255.255.252.0(22)
103.100.124.0/255.255.252.0(22)
103.100.164.0/255.255.252.0(22)
103.103.80.0/255.255.252.0(22)
103.104.148.0/255.255.252.0(22)
103.106.52.0/255.255.252.0(22)
103.116.68.0/255.255.252.0(22)
103.116.8.0/255.255.252.0(22)
103.116.96.0/255.255.252.0(22)
103.117.112.0/255.255.252.0(22)
103.117.224.0/255.255.252.0(22)
103.117.4.0/255.255.252.0(22)
103.118.148.0/255.255.252.0(22)
103.118.24.0/255.255.252.0(22)
103.118.28.0/255.255.252.0(22)
103.119.212.0/255.255.252.0(22)
103.120.148.0/255.255.252.0(22)
103.121.176.0/255.255.252.0(22)
103.122.116.0/255.255.252.0(22)
103.122.124.0/255.255.252.0(22)
103.122.140.0/255.255.252.0(22)
103.122.148.0/255.255.252.0(22)
103.122.16.0/255.255.252.0(22)
103.122.160.0/255.255.252.0(22)
103.122.188.0/255.255.252.0(22)
103.122.196.0/255.255.252.0(22)
103.122.20.0/255.255.252.0(22)
103.122.204.0/255.255.252.0(22)
103.122.208.0/255.255.252.0(22)
103.122.212.0/255.255.252.0(22)
103.122.216.0/255.255.252.0(22)
103.122.220.0/255.255.252.0(22)
103.122.224.0/255.255.252.0(22)
103.122.236.0/255.255.252.0(22)
103.122.80.0/255.255.252.0(22)
103.123.0.0/255.255.252.0(22)
103.123.124.0/255.255.252.0(22)
103.123.128.0/255.255.252.0(22)
103.123.132.0/255.255.252.0(22)
103.123.140.0/255.255.252.0(22)
103.123.152.0/255.255.252.0(22)
103.123.172.0/255.255.252.0(22)
103.123.184.0/255.255.252.0(22)
103.123.188.0/255.255.252.0(22)
103.123.192.0/255.255.252.0(22)
103.123.196.0/255.255.252.0(22)
103.123.216.0/255.255.252.0(22)
103.123.240.0/255.255.252.0(22)
103.123.252.0/255.255.252.0(22)
103.123.60.0/255.255.252.0(22)
103.124.120.0/255.255.252.0(22)
103.124.148.0/255.255.252.0(22)
103.124.176.0/255.255.252.0(22)
103.124.20.0/255.255.252.0(22)
103.124.208.0/255.255.252.0(22)
103.124.252.0/255.255.252.0(22)
103.124.28.0/255.255.252.0(22)
103.124.40.0/255.255.252.0(22)
103.124.72.0/255.255.252.0(22)
103.124.76.0/255.255.252.0(22)
103.125.0.0/255.255.252.0(22)
103.125.156.0/255.255.252.0(22)
103.125.180.0/255.255.252.0(22)
103.125.224.0/255.255.252.0(22)
103.125.228.0/255.255.252.0(22)
103.125.64.0/255.255.252.0(22)
103.126.140.0/255.255.252.0(22)
103.126.164.0/255.255.252.0(22)
103.126.180.0/255.255.252.0(22)
103.126.252.0/255.255.252.0(22)
103.126.88.0/255.255.252.0(22)
103.127.132.0/255.255.252.0(22)
103.127.136.0/255.255.252.0(22)
103.127.148.0/255.255.252.0(22)
103.127.216.0/255.255.252.0(22)
103.127.220.0/255.255.252.0(22)
103.127.228.0/255.255.252.0(22)
103.127.232.0/255.255.252.0(22)
103.127.236.0/255.255.252.0(22)
103.127.240.0/255.255.252.0(22)
103.129.100.0/255.255.252.0(22)
103.129.124.0/255.255.252.0(22)
103.129.136.0/255.255.252.0(22)
103.129.144.0/255.255.252.0(22)
103.129.160.0/255.255.252.0(22)
103.129.164.0/255.255.252.0(22)
103.129.168.0/255.255.252.0(22)
103.129.172.0/255.255.252.0(22)
103.129.176.0/255.255.252.0(22)
103.129.180.0/255.255.252.0(22)
103.129.240.0/255.255.252.0(22)
103.130.0.0/255.255.252.0(22)
103.130.100.0/255.255.252.0(22)
103.130.116.0/255.255.252.0(22)
103.130.120.0/255.255.252.0(22)
103.130.124.0/255.255.252.0(22)
103.130.16.0/255.255.252.0(22)
103.130.20.0/255.255.252.0(22)
103.130.24.0/255.255.252.0(22)
103.130.248.0/255.255.252.0(22)
103.130.252.0/255.255.252.0(22)
103.130.28.0/255.255.252.0(22)
103.130.32.0/255.255.252.0(22)
103.130.36.0/255.255.252.0(22)
103.130.40.0/255.255.252.0(22)
103.130.44.0/255.255.252.0(22)
103.130.48.0/255.255.252.0(22)
103.130.80.0/255.255.252.0(22)
103.130.84.0/255.255.252.0(22)
103.130.92.0/255.255.252.0(22)
103.130.96.0/255.255.252.0(22)
103.131.112.0/255.255.252.0(22)
103.131.124.0/255.255.252.0(22)
103.131.128.0/255.255.252.0(22)
103.131.132.0/255.255.252.0(22)
103.131.136.0/255.255.252.0(22)
103.131.148.0/255.255.252.0(22)
103.131.172.0/255.255.252.0(22)
103.131.196.0/255.255.252.0(22)
103.131.248.0/255.255.252.0(22)
103.131.252.0/255.255.252.0(22)
103.131.56.0/255.255.252.0(22)
103.131.84.0/255.255.252.0(22)
103.132.100.0/255.255.252.0(22)
103.132.132.0/255.255.252.0(22)
103.132.156.0/255.255.252.0(22)
103.132.20.0/255.255.252.0(22)
103.132.40.0/255.255.252.0(22)
103.132.44.0/255.255.252.0(22)
103.133.152.0/255.255.252.0(22)
103.133.156.0/255.255.252.0(22)
103.133.196.0/255.255.252.0(22)
103.133.244.0/255.255.252.0(22)
103.133.44.0/255.255.252.0(22)
103.134.120.0/255.255.252.0(22)
103.134.232.0/255.255.252.0(22)
103.134.80.0/255.255.252.0(22)
103.135.116.0/255.255.252.0(22)
103.135.120.0/255.255.252.0(22)
103.135.16.0/255.255.252.0(22)
103.135.20.0/255.255.252.0(22)
103.135.64.0/255.255.252.0(22)
103.136.210.0/255.255.254.0(23)
103.136.212.0/255.255.254.0(23)
103.136.224.0/255.255.254.0(23)
103.136.60.0/255.255.254.0(23)
103.137.166.0/255.255.254.0(23)
103.137.188.0/255.255.254.0(23)
103.137.22.0/255.255.254.0(23)
103.137.246.0/255.255.254.0(23)
103.137.34.0/255.255.254.0(23)
103.137.62.0/255.255.254.0(23)
103.137.64.0/255.255.254.0(23)
103.137.98.0/255.255.254.0(23)
103.138.106.0/255.255.254.0(23)
103.138.194.0/255.255.254.0(23)
103.138.254.0/255.255.254.0(23)
103.138.92.0/255.255.254.0(23)
103.139.126.0/255.255.254.0(23)
103.139.240.0/255.255.254.0(23)
103.139.64.0/255.255.254.0(23)
103.139.92.0/255.255.254.0(23)
103.139.96.0/255.255.254.0(23)
103.140.110.0/255.255.254.0(23)
103.140.232.0/255.255.254.0(23)
103.141.80.0/255.255.254.0(23)
103.141.82.0/255.255.254.0(23)
103.142.150.0/255.255.254.0(23)
103.142.152.0/255.255.254.0(23)
103.142.176.0/255.255.254.0(23)
103.142.42.0/255.255.254.0(23)
103.142.44.0/255.255.254.0(23)
103.143.56.0/255.255.254.0(23)
103.16.240.0/255.255.252.0(22)
103.16.244.0/255.255.252.0(22)
103.17.240.0/255.255.252.0(22)
103.17.8.0/255.255.252.0(22)
103.18.128.0/255.255.252.0(22)
103.196.172.0/255.255.252.0(22)
103.197.172.0/255.255.252.0(22)
103.2.216.0/255.255.252.0(22)
103.20.176.0/255.255.252.0(22)
103.20.40.0/255.255.252.0(22)
103.200.0.0/255.255.252.0(22)
103.207.252.0/255.255.252.0(22)
103.21.196.0/255.255.252.0(22)
103.21.60.0/255.255.252.0(22)
103.222.248.0/255.255.252.0(22)
103.224.132.0/255.255.252.0(22)
103.224.192.0/255.255.252.0(22)
103.224.200.0/255.255.252.0(22)
103.224.204.0/255.255.252.0(22)
103.225.0.0/255.255.252.0(22)
103.227.224.0/255.255.252.0(22)
103.227.32.0/255.255.252.0(22)
103.228.216.0/255.255.252.0(22)
103.229.100.0/255.255.252.0(22)
103.229.132.0/255.255.252.0(22)
103.229.50.0/255.255.255.0(24)
103.23.108.0/255.255.252.0(22)
103.231.48.0/255.255.252.0(22)
103.233.68.0/255.255.252.0(22)
103.234.224.0/255.255.252.0(22)
103.234.228.0/255.255.252.0(22)
103.234.40.0/255.255.252.0(22)
103.234.76.0/255.255.252.0(22)
103.234.80.0/255.255.252.0(22)
103.235.88.0/255.255.252.0(22)
103.239.60.0/255.255.252.0(22)
103.24.100.0/255.255.252.0(22)
103.241.68.0/255.255.252.0(22)
103.243.248.0/255.255.252.0(22)
103.247.112.0/255.255.252.0(22)
103.25.232.0/255.255.252.0(22)
103.25.236.0/255.255.252.0(22)
103.252.128.0/255.255.252.0(22)
103.252.196.0/255.255.252.0(22)
103.252.68.0/255.255.252.0(22)
103.30.128.0/255.255.252.0(22)
103.30.132.0/255.255.252.0(22)
103.30.44.0/255.255.252.0(22)
103.31.196.0/255.255.252.0(22)
103.36.116.0/255.255.252.0(22)
103.37.36.0/255.255.252.0(22)
103.42.144.0/255.255.252.0(22)
103.42.148.0/255.255.252.0(22)
103.43.48.0/255.255.252.0(22)
103.46.188.0/255.255.252.0(22)
103.5.100.0/255.255.252.0(22)
103.5.32.0/255.255.252.0(22)
103.59.220.0/255.255.252.0(22)
103.8.104.0/255.255.252.0(22)
103.97.48.0/255.255.252.0(22)
103.99.88.0/255.255.252.0(22)
106.1.0.0/255.255.0.0(16)
106.104.0.0/255.252.0.0(14)
106.64.0.0/255.254.0.0(15)
110.24.0.0/255.248.0.0(13)
110.50.128.0/255.255.192.0(18)
111.125.128.0/255.255.248.0(21)
111.235.192.0/255.255.192.0(18)
111.240.0.0/255.240.0.0(12)
111.67.48.0/255.255.240(20)
111.70.0.0/255.254.0.0(15)
111.80.0.0/255.252.0.0(14)
112.104.0.0/255.254.0.0(15)
112.213.48.0/255.255.240(20)
112.78.64.0/255.255.224.0(19)
113.196.0.0/255.255.0.0(16)
113.21.160.0/255.255.224.0(19)
113.21.80.0/255.255.240(20)
113.61.128.0/255.255.128.0(17)
114.136.0.0/255.254.0.0(15)
114.140.0.0/255.255.0.0(16)
114.198.160.0/255.255.240(20)
114.198.176.0/255.255.240(20)
114.24.0.0/255.252.0.0(14)
114.29.240.0/255.255.252.0(22)
114.29.244.0/255.255.252.0(22)
114.30.32.0/255.255.240(20)
114.32.0.0/255.240.0.0(12)
115.165.192.0/255.255.192.0(18)
115.30.64.0/255.255.192.0(18)
115.42.112.0/255.255.248.0(21)
115.42.80.0/255.255.240(20)
115.43.0.0/255.255.0.0(16)
115.80.0.0/255.252.0.0(14)
115.85.144.0/255.255.240(20)
116.118.128.0/255.255.192.0(18)
116.212.80.0/255.255.240(20)
116.241.0.0/255.255.0.0(16)
116.50.32.0/255.255.240(20)
116.59.0.0/255.255.0.0(16)
116.89.128.0/255.255.240(20)
117.103.96.0/255.255.240(20)
117.19.0.0/255.255.0.0(16)
117.56.0.0/255.255.0.0(16)
118.150.0.0/255.255.0.0(16)
118.160.0.0/255.248.0.0(13)
118.168.0.0/255.252.0.0(14)
118.231.0.0/255.255.0.0(16)
118.232.0.0/255.254.0.0(15)
118.99.128.0/255.255.128.0(17)
119.14.0.0/255.255.0.0(16)
119.15.192.0/255.255.192.0(18)
119.30.16.0/255.255.240(20)
119.31.176.0/255.255.240(20)
119.77.128.0/255.255.128.0(17)
120.96.0.0/255.224.0.0(11)
121.254.64.0/255.255.192.0(18)
121.50.144.0/255.255.248.0(21)
121.50.176.0/255.255.240(20)
122.100.64.0/255.255.192.0(18)
122.116.0.0/255.254.0.0(15)
122.118.0.0/255.255.0.0(16)
122.120.0.0/255.248.0.0(13)
122.146.0.0/255.254.0.0(15)
122.200.152.0/255.255.248.0(21)
122.201.128.0/255.255.128.0(17)
122.254.0.0/255.255.192.0(18)
122.255.80.0/255.255.240(20)
122.99.0.0/255.255.192.0(18)
123.0.192.0/255.255.192.0(18)
123.0.32.0/255.255.224.0(19)
123.110.0.0/255.255.0.0(16)
123.192.0.0/255.252.0.0(14)
123.204.0.0/255.254.0.0(15)
123.240.0.0/255.254.0.0(15)
123.252.0.0/255.255.128.0(17)
123.50.32.0/255.255.224.0(19)
123.51.128.0/255.255.128.0(17)
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61.56.0.0/255.255.240(20)
61.56.128.0/255.255.240(20)
61.56.144.0/255.255.240(20)
61.56.16.0/255.255.240(20)
61.56.160.0/255.255.224.0(19)
61.56.192.0/255.255.224.0(19)
61.56.224.0/255.255.224.0(19)
61.56.64.0/255.255.240(20)
61.56.80.0/255.255.240(20)
61.56.96.0/255.255.240(20)
61.57.0.0/255.255.224.0(19)
61.57.128.0/255.255.240(20)
61.57.144.0/255.255.240(20)
61.57.160.0/255.255.240(20)
61.57.176.0/255.255.240(20)
61.57.208.0/255.255.240(20)
61.57.224.0/255.255.240(20)
61.57.240.0/255.255.240(20)
61.57.32.0/255.255.224.0(19)
61.57.64.0/255.255.192.0(18)
61.58.112.0/255.255.240(20)
61.58.128.0/255.255.224.0(19)
61.58.16.0/255.255.240(20)
61.58.160.0/255.255.224.0(19)
61.58.192.0/255.255.192.0(18)
61.58.32.0/255.255.240(20)
61.58.48.0/255.255.240(20)
61.58.64.0/255.255.240(20)
61.58.80.0/255.255.240(20)
61.58.96.0/255.255.240(20)
61.59.0.0/255.255.0.0(16)
61.60.0.0/255.255.224.0(19)
61.60.128.0/255.255.224.0(19)
61.60.160.0/255.255.224.0(19)
61.60.192.0/255.255.240(20)
61.60.208.0/255.255.240(20)
61.60.224.0/255.255.240(20)
61.60.240.0/255.255.240(20)
61.60.32.0/255.255.224.0(19)
61.60.64.0/255.255.192.0(18)
61.61.0.0/255.255.128.0(17)
61.61.128.0/255.255.192.0(18)
61.61.208.0/255.255.224.0(19)
61.61.240.0/255.255.240(20)
61.62.0.0/255.255.0.0(16)
61.63.0.0/255.255.224.0(19)
61.63.128.0/255.255.224.0(19)
61.63.160.0/255.255.224.0(19)
61.63.192.0/255.255.192.0(18)
61.63.32.0/255.255.192.0(18)
61.63.96.0/255.255.224.0(19)
61.64.0.0/255.255.224.0(19)
61.64.128.0/255.255.128.0(17)
61.64.48.0/255.255.240(20)
61.64.64.0/255.255.192.0(18)
61.65.0.0/255.255.128.0(17)
61.65.128.0/255.255.192.0(18)
61.65.192.0/255.255.224.0(19)
61.65.224.0/255.255.224.0(19)
61.66.0.0/255.255.0.0(16)
61.67.0.0/255.255.240(20)
61.67.112.0/255.255.240(20)
61.67.128.0/255.255.128.0(17)
61.67.16.0/255.255.224.0(19)
61.67.48.0/255.255.240(20)
61.67.64.0/255.255.224.0(19)

資料來源：
https://rms.twnic.net.tw/help_ipv4_assign.php