How to reverse lookup an IP address using Async::DNS::Resolver?

[postmodern]

How do I do a reverse lookup of an IP using Async::DNS::Resolver? I tried calling .query with Resolv::DNS::Resource::IN::PTR, but I got the wrong host-name back.

resolver = Async::DNS::Resolver.new([[:udp, '8.8.8.8', 53]])
Async { p resolver.query('1.1.1.1', Resolv::DNS::Resource::IN::PTR) }
# #<Resolv::DNS::Message:0x00007f8a68a07400 @id=64041, @qr=1, @opcode=0, @aa=0, @tc=0, @rd=1, @ra=1, @rcode=3, @question=[[#<Resolv::DNS::Name: 1.1.1.1.>, Resolv::DNS::Resource::IN::PTR]], @answer=[], @authority=[[#<Resolv::DNS::Name: .>, 86375, #<Resolv::DNS::Resource::IN::SOA:0x00007f8a68a091d8 @mname=#<Resolv::DNS::Name: a.root-servers.net.>, @rname=#<Resolv::DNS::Name: nstld.verisign-grs.com.>, @serial=2023040502, @refresh=1800, @retry=900, @expire=604800, @minimum=86400, @ttl=86375>]], @additional=[]>

Reverse looking up 1.1.1.1 should return one.one.one.one.

[adam12]

Need to query the in-addr.arpa zone.

resolver = Async::DNS::Resolver.new([[:udp, "8.8.8.8", 53], [:tcp, "8.8.8.8", 53]])

Async do
  message = resolver.query("1.1.1.1.in-addr.arpa", Resolv::DNS::Resource::IN::PTR)
  _name, _ttl_, record = message.answer.first
  p record.name
end

[adam12]

Forgot to mention, because 1.1.1.1 is kind-of "palindrome" like, it's not obvious that the octets passed to in-addr.arpa need to be reversed.

8.8.4.4 would be 4.4.8.8.in-addr.arpa.