Zone apex
Start of authority
Email
Serial
2026031203
Refresh
3h
Retry
1h
Expire
30d
Negative cache TTL
3h
Question and response
Question
dig www.o2.cz. SOA
Answer
The response has no answer records.
Authority
o2.cz. 10800 SOA dns.iol.cz. hostmaster.iol.cz. 2026031203 10800 3600 2592000 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0