MX records not consistent
Authoritative servers are returning different records.
- This likely indicates a DNS server configuration issue.
- Records may not have propagated among authoritative servers yet.
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
Australia
123.100.147.201
United States of America
162.243.12.37
India
172.232.76.111
Ukraine
193.238.152.32
Brazil
200.231.34.18
South Africa
41.23.252.3
Canada
51.222.248.234
Netherlands
80.74.29.136
Russia
81.211.115.166
2a10:50c0::ad1:ff
185.228.168.168
2606:4700:4700::1001
2001:4860:4860::8844
NextDNS
45.90.28.66
OpenDns
2620:119:53::53
2620:fe::9
30
rs.cesnet.cz
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 MX records found