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
105.246.156.146
United States of America
162.243.12.37
India
172.232.76.111
Netherlands
185.140.209.224
Brazil
200.231.34.18
Australia
203.22.100.10
Russia
217.26.29.42
Canada
24.37.219.202
Ukraine
91.239.232.181
2a10:50c0::ad1:ff
2a0d:2a00:1::
2606:4700:4700::1111
8.8.8.8
NextDNS
2a07:a8c0::53:54e9
OpenDns
208.67.222.222
149.112.112.112
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