Zone apex
Start of authority
Email
Serial
2026022500
Refresh
3h
Retry
1h
Expire
30d
Negative cache TTL
3h
Question and response
Question
dig o2.cz. SOA
Answer
o2.cz. 10800 SOA dns.iol.cz. hostmaster.iol.cz. 2026022500 10800 3600 2592000 10800
Authority
o2.cz. 10800 NS ns2.tel.cz.
o2.cz. 10800 NS dns.iol.cz.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0