Return domain name by ip address

[vladsakalkin]

Hello,
How to return domain name by ip address? Not PTR record
For example nslookup 8.8.8.8 will return dns.google

[doujiang24]

I think PTR record is what you need.
https://github.com/openresty/lua-resty-dns#reverse_query

I have captured the network during nslookup 8.8.8.8, there is a PTR query.

I'm not sure why do you said Not PTR record, due to other reasons?