1，每天从APNIC下载

http://ftp.apnic.net/apnic/stats/apnic/delegated-apnic-latest

2,然后用如下代码：

with open('delegated-apnic-latest') as f:
    data = f.read()

for line in filter(lambda x: x.startswith('apnic|CN|ipv4'), data.splitlines()):
    item = line.split('|')
    print('{}/{}'.format(item[3], 33 - int(item[4]).bit_length()))

可以得到如下格式的IP段信息：
218.104.0.0/17
3，转换成IP范围格式：

import ipaddress

ip = ipaddress.IPv4Network('223.255.0.0/17')
start_ip = ip.network_address
end_ip = ip.broadcast_address

print(f"IP Range: {start_ip} - {end_ip}")

或者：

ip = '223.255.0.0/17'

# 将IP地址和掩码分开
ip_addr, mask_len = ip.split('/')
mask_len = int(mask_len)

# 将IP地址转换为32位二进制字符串
ip_bin = ''.join([bin(int(x)).lstrip('0b').rjust(8, '0') for x in ip_addr.split('.')])

# 获取网络地址和广播地址
net_addr_bin = ip_bin[:mask_len] + '0' * (32 - mask_len)
bcast_addr_bin = ip_bin[:mask_len] + '1' * (32 - mask_len)
net_addr = '.'.join([str(int(net_addr_bin[i:i+8], 2)) for i in range(0, 32, 8)])
bcast_addr = '.'.join([str(int(bcast_addr_bin[i:i+8], 2)) for i in range(0, 32, 8)])

print("IP Range: {} - {}".format(net_addr, bcast_addr))

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