怎样分辨域名真假

import whois

def check_domain(domain):
    try:
        w = whois.whois(domain)
        if w.status:
            print(f"Domain {domain} is registered and active.")
        else:
            print(f"Domain {domain} is not active or does not exist.")
    except Exception as e:
        print(f"Error: {e}")

check_domain("example.com")

import dns.resolver

def check_dns(domain):
    try:
        answers = dns.resolver.resolve(domain, 'A')
        if answers:
            print(f"Domain {domain} has valid DNS records.")
        else:
            print(f"Domain {domain} does not have valid DNS records.")
    except dns.resolver.NXDOMAIN:
        print(f"Domain {domain} does not exist.")
    except Exception as e:
        print(f"Error: {e}")

check_dns("example.com")