批量检测域名dns

import dns.resolver
import time

def check_dns(domain):
    try:
        start_time = time.time()
        answers = dns.resolver.resolve(domain, 'A')
        end_time = time.time()
        print(f"Domain: {domain}, IP: {answers[0].address}, Time: {end_time - start_time:.2f}s")
    except dns.resolver.NXDOMAIN:
        print(f"Domain: {domain} does not exist.")
    except dns.resolver.NoAnswer:
        print(f"Domain: {domain} has no A records.")
    except dns.resolver.Timeout:
        print(f"Domain: {domain} DNS resolution timed out.")
    except Exception as e:
        print(f"Domain: {domain}, Error: {e}")

domains = ['example1.com', 'example2.com', 'example3.com']

for domain in domains:
    check_dns(domain)