2.171.138.78.in-addr.arpa.
Question and response
Question
dig 2.171.138.78.in-addr.arpa. PTR
Answer
2.171.138.78.in-addr.arpa. 86400 PTR 2.171.138.78.in-addr.arpa.
Authority
171.138.78.in-addr.arpa. 86400 NS ns.tattelecom.ru.
171.138.78.in-addr.arpa. 86400 NS ns2.tattelecom.ru.
Additional
ns.tattelecom.ru. 3600 A 217.23.176.1
ns2.tattelecom.ru. 3600 A 217.23.177.249
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0