Zone apex
Start of authority
Email
Serial
669179
Refresh
3h
Retry
1h
Expire
7d
Negative cache TTL
1h
Question and response
Question
dig GCB.SU. SOA
Answer
GCB.SU. 3600 SOA ns-mail01.getcourse.ru. hostmaster.GCB.SU. 669179 10800 3600 604800 3600
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0