145.255.13.236.dynamic.slv.ufanet.ru has no NS records.
NS records for this zone are defined at slv.ufanet.ru.
NS records for this zone are defined at slv.ufanet.ru.
Question and response
Question
dig 145.255.13.236.dynamic.slv.ufanet.ru. NS
Answer
The response has no answer records.
Authority
slv.ufanet.ru. 86400 SOA ns1.ufanet.ru. root.ufanet.ru. 2009061627 7200 1800 864000 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0