_spf.ketnet.cz DNS trace

Root zone

These servers manage the DNS root zone

a.root-servers.net
AS397197
AS397197
b.root-servers.net
AS394353
AS394353
c.root-servers.net
AS2149
AS2149
d.root-servers.net
AS10886
AS10886
e.root-servers.net
AS21556
AS21556
f.root-servers.net
AS3557
AS3557
g.root-servers.net
AS5927
AS5927
h.root-servers.net
AS1508
AS1508
i.root-servers.net
AS29216
AS29216
j.root-servers.net
AS396661
AS396661
k.root-servers.net
AS25152
AS25152
l.root-servers.net
AS20144
AS20144
m.root-servers.net
AS7500
AS7500
all servers delegate to

cz.

These servers manage the cz zone

a.ns.nic.cz
AS25192
AS25192
b.ns.nic.cz
AS25192
AS25192
c.ns.nic.cz
AS200070
AS200070
d.ns.nic.cz
AS25192
AS25192
all servers delegate to

ketnet.cz.

These servers manage the ketnet.cz zone

alfa.ns.active24.cz
AS25234
AS25234
beta.ns.active24.cz
AS51013
AS51013
gama.ns.active24.sk

These servers claim authority over the ketnet.cz zone, which contains _spf.ketnet.cz