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
105.243.206.165
Australia
123.100.147.201
India
172.232.76.111
Russia
185.246.88.234
Ukraine
193.238.152.32
Brazil
200.231.34.18
Canada
51.222.248.234
Netherlands
80.74.29.136
94.140.14.14
185.228.169.168
2606:4700:4700::1111
2001:4860:4860::8844
NextDNS
45.90.28.66
OpenDns
2620:119:35::35
9.9.9.9
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
United States of America
47.200.206.34
No A records found