如何查选域名有没有备案

import requests
from bs4 import BeautifulSoup

def check_domain_registration(domain):
    url = f"https://beian.miit.gov.cn/publish/query/indexFirst.action"
    params = {
        "keyword": domain,
        "channel": "0",
        "icpType": "0",
        "searchType": "1"
    }
    response = requests.get(url, params=params)
    soup = BeautifulSoup(response.text, 'html.parser')
    
    if "没有找到您查询的信息" in soup.text:
        return f"域名 {domain} 没有备案"
    else:
        return f"域名 {domain} 已备案"

# 示例使用
domain = "example.com"
result = check_domain_registration(domain)
print(result)