Python使用dnspython实现DNS查询与操作的全面指南

pip install dnspython

import dns
print(dns.__version__)

import dns.resolver

result = dns.resolver.resolve("www.google.com", "A")
for ipval in result:
    print("IP 地址:", ipval.to_text())

IP 地址: 142.250.72.68

import dns.resolver

answers = dns.resolver.resolve("python.org", "A")
for rdata in answers:
    print(rdata.to_text())

import dns.message, dns.query

q = dns.message.make_query("example.com", "A")
response = dns.query.udp(q, "8.8.8.8")
print(response)

import dns.zone

z = dns.zone.from_file("db.example.com", "example.com")
for name, node in z.nodes.items():
    print(name, node)

import dns.reversename, dns.resolver

rev_name = dns.reversename.from_address("8.8.8.8")
print(dns.resolver.resolve(rev_name, "PTR")[0])

import dns.dnssec, dns.resolver

answer = dns.resolver.resolve("dnssec-failed.org", "A")
print(answer.response)

def resolve_domain(domain):
    try:
        result = dns.resolver.resolve(domain, "A")
        return [r.to_text() for r in result]
    except Exception as e:
        return str(e)

print(resolve_domain("www.github.com"))

answers = dns.resolver.resolve("gmail.com", "MX")
for rdata in answers:
    print("优先级:", rdata.preference, "邮件服务器:", rdata.exchange)

answers = dns.resolver.resolve("google.com", "TXT")
for rdata in answers:
    print("TXT:", rdata.to_text())

rev = dns.reversename.from_address("142.250.72.68")
print(dns.resolver.resolve(rev, "PTR")[0])

resolver = dns.resolver.Resolver()
resolver.nameservers = ["1.1.1.1"]
result = resolver.resolve("example.com", "A")
print(result[0])

import sys, dns.resolver

domain = sys.argv[1]
record_type = sys.argv[2]

answers = dns.resolver.resolve(domain, record_type)
for r in answers:
    print(r.to_text())

python dns_tool.py example.com A

domains = ["google.com", "python.org", "nonexistent.domain"]

for d in domains:
    try:
        dns.resolver.resolve(d, "A")
        print(f"{d} 解析成功")
    except:
        print(f"{d} 无法解析")

import asyncio, dns.asyncresolver

async def query(domain):
    try:
        result = await dns.asyncresolver.resolve(domain, "A")
        print(domain, result[0])
    except:
        print(domain, "查询失败")

asyncio.run(query("python.org"))