Zone apex
Start of authority
Email
Serial
2026021801
Refresh
3h
Retry
1h
Expire
60d
Negative cache TTL
3h
Question and response
Question
dig backmx.iol.cz. SOA
Answer
The response has no answer records.
Authority
iol.cz. 10800 SOA dns.iol.cz. hostmaster.iol.cz. 2026021801 10800 3600 5184000 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0