查询网址域名是否存在

import dns.resolver

def check_domain(domain):
    try:
        answers = dns.resolver.resolve(domain, 'A')
        return True
    except dns.resolver.NXDOMAIN:
        return False
    except dns.resolver.NoAnswer:
        return False
    except dns.resolver.Timeout:
        return False

# 示例
print(check_domain("example.com"))  # 返回True或False

import whois

def check_whois(domain):
    try:
        w = whois.whois(domain)
        return True
    except Exception as e:
        return False

# 示例
print(check_whois("example.com"))  # 返回True或False

import requests

def check_http(domain):
    try:
        response = requests.get(f"http://{domain}", timeout=5)
        return response.status_code == 200
    except requests.RequestException:
        return False

# 示例
print(check_http("example.com"))  # 返回True或False