spf310.gcb.su NS records

NS Authoritative DNS server
1h
spf310.gcb.su has no NS records.
NS records for this zone are defined at gcb.su.
trace spf310.gcb.su NS records for gcb.su

Question and response

Question

dig spf310.gcb.su. NS

Answer

The response has no answer records.

Authority

gcb.su. 3600 SOA ns-mail01.getcourse.ru. hostmaster.gcb.su. 669349 10800 3600 604800 3600

Additional

. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0