4 / 10
Lookups
0
Issues
16,337
IPv4 addresses
1.58 ⋅ 10
29
IPv6 addresses
Terms
a
pass
if the sender's IP address is in the A or AAAA record of this domain.
or else
mx
pass
if the sender's IP address is in the A or AAAA record of this domain.
or else
include:
_spf.nameserver.sk
Evaluate this SPF record and
pass
if it
passes.
This include does nothing if the included record returns fail, soft fail, or neutral.
or else
-all
fail
the email's SPF check.
Included records
v=spf1 a mx include:_spf.nameserver.sk -all
12 x ip4 3 x ip6 include:smtpx.stable.cz -all
25 x ip4 4 x ip6 ~all
IP ranges
2a00:1e40:cafe:244::
/ 64
Webglobe, s.r.o.
AS29134
2a00:1e40:cafe:244::
2a00:1e40:cafe:244:ffff:ffff:ffff:ffff
92.240.246.128
/ 25
LightStorm Services s.r.o.
AS42005
92.240.246.128 - 92.240.246.255
128 IP addresses
2001:1ba0:2a0:5965::
/ 64
SWAN, a.s.
AS5578
2001:1ba0:2a0:5965::
2001:1ba0:2a0:5965:ffff:ffff:ffff:ffff
2a00:1e40:cafe:244::
/ 64
Webglobe, s.r.o.
AS29134
2a00:1e40:cafe:244::
2a00:1e40:cafe:244:ffff:ffff:ffff:ffff