Zone apex
Start of authority
Email
Serial
672366
Refresh
3h
Retry
1h
Expire
7d
Negative cache TTL
1h
Question and response
Question
dig mta-sw040.gcb.su. SOA
Answer
The response has no answer records.
Authority
gcb.su. 3600 SOA ns-mail03.getcourse.ru. hostmaster.gcb.su. 672366 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0