知道备案号怎样查询主域名

import requests

def query_domain_by_icp_number(icp_number):
    url = "https://example.com/api/query_icp"  # 假设这是官方API地址
    params = {
        "icp_number": icp_number
    }
    response = requests.get(url, params=params)
    if response.status_code == 200:
        data = response.json()
        return data.get("domain")
    else:
        return "查询失败"

icp_number = "1234567890"  # 替换为实际的备案号
domain = query_domain_by_icp_number(icp_number)
print(f"备案号 {icp_number} 对应的主域名是: {domain}")