怎么查询域名是在哪里备案的

import requests
from bs4 import BeautifulSoup

def query_domain_registration(domain):
    url = f"http://www.miitbeian.gov.cn/publish/query/indexFirst.action"
    params = {
        'domain': domain,
        'user': '',
        'password': '',
        'submit': ''
    }
    response = requests.post(url, data=params)
    soup = BeautifulSoup(response.text, 'html.parser')
    
    # 解析备案信息
    registration_info = soup.find('div', class_='result')
    if registration_info:
        return registration_info.text.strip()
    else:
        return "未找到备案信息"

# 示例查询
domain = "example.com"
print(query_domain_registration(domain))