【学员分享】多线程域名查ip工具

```python
import dns.resolver
from concurrent.futures import ThreadPoolExecutor, as_completed

def resolve_domain_with_dnspython(domain):
    """Resolve a single domain to all its IP addresses using dnspython and return them as a list."""
    try:
        answers = dns.resolver.resolve(domain.strip(), 'A')
        return [str(answer) for answer in answers]
    except (dns.resolver.NoAnswer, dns.resolver.NXDOMAIN, dns.exception.DNSException) as e:
        print(f"Failed to resolve domain {domain}: {e}")
        return []

def process_domains_concurrently(input_file, output_file, max_workers=10):
    """
    Process multiple
    :param input_file: 输入文件
    :param output_file: 输出文件
    :param max_workers: 默认线程数
    :return:
    """
    unique_ips = set()
    with open(input_file, 'r') as infile:
        domains = infile.readlines()

with ThreadPoolExecutor(max_workers=max_workers) as executor:
        futures = [executor.submit(resolve_domain_with_dnspython, domain) for domain in domains]

for future in as_completed(futures):
            ips = future.result()
            if ips:
                unique_ips.update(ips)

with open(output_file, 'w') as outfile:
        for ip in sorted(unique_ips):
            outfile.write(ip + '\n')

if __name__ == "__main__":
    input_file = 'domains.txt'  # 要解析的域名列表文件
    output_file = 'ip.txt'  # 输出文件
    process_domains_concurrently(input_file, output_file)

```

将以上代码保存为 thread_dns.py 并在同目录下新建domains.txt 把需要解析的域名写入（**解析的域名不能带http或者https**）

在python环境下命令行运行 python thread_dns.py 即可

![](/media/202412/2024-12-20_154045_4617120.10976239976222768.png)
![](/media/202412/2024-12-20_154029_9586880.8883975728948892.png)

感谢张帅同学分享