Zone apex
Start of authority
Email
Serial
668490
Refresh
3h
Retry
1h
Expire
7d
Negative cache TTL
1h
Question and response
Question
dig gcb.su. SOA
Answer
gcb.su. 3600 SOA ns-mail02.getcourse.ru. hostmaster.gcb.su. 668490 10800 3600 604800 3600
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0