A records not consistent
Authoritative servers are returning different records.
- This is normal for A records — they can be geo- or round-robin load-balanced.
- If this is not intentional, check your DNS server configuration.
DNS server
TTL
Time To Live
The amount of time a DNS record is cached for.
Records returned by these servers
The official source of information for this domain,
managed by the owner of cas.cz .
managed by the owner of cas.cz .
academy.cas.cz
147.231.58.1
The official source of information for this domain,
managed by the owner of cas.cz .
managed by the owner of cas.cz .
visla.utia.cas.cz
147.231.12.1
South Africa
105.246.161.188
Australia
116.206.128.31
United States of America
162.243.12.37
India
182.156.93.102
Ukraine
193.150.122.140
Brazil
194.26.73.51
Netherlands
31.20.246.131
Canada
50.21.174.242
Russia
80.87.198.176
94.140.15.15
185.228.169.168
1.0.0.1
8.8.4.4
NextDNS
45.90.28.66
OpenDns
2620:119:53::53
2620:fe::9
The official source of information for this domain,
managed by the owner of cas.cz .
managed by the owner of cas.cz .
nsa.ces.net
195.113.144.205
No A records found