Test of www.katerinatu.cz
E
Detailed results
DNS servers
DNS servers without IPv6. That is grade E.
www.katerinatu.cz
- ✗ ns2.securitynet.cz [no IPv6]
- ✗ ns3.hukot.cz [no IPv6]
- ✗ ns1.hukot.cz [no IPv6]
Web servers
The website is accessible over IPv6, great!
- ✓ 2a02:25b0:aaaa:1::8
- ✓ 2a02:25b0:aaaa:1::4
E-mail servers
E-mail servers without IPv6. That is grade E/F.
- ✗ mail.hukot.net [no IPv6]
- ✗ mx2.securitynet.cz [no IPv6]
Last tests
| Test date | Grade |
|---|---|
| 16 Nov 2025 17:30 | E |