centronet.cz SPF record

1 / 10 Lookups
0 Issues
37 IPv4 addresses
0 IPv6 addresses
v=spf1 mx ip4:217.195.160.0/27 ip4:217.195.161.90 ip4:109.72.0.73 ip4:109.72.0.62 ip4:109.72.0.70 ~all Copied

Terms

mx
pass if the sender's IP address is in the A or AAAA record of this domain.
1 IPv4 address
or else
ip4:
217.195.160.0 / 27
pass if the sender's IP is between
217.195.160.0 and 217.195.160.31 (inclusive).
O2 Czech Republic, a.s.
AS29321
or else
ip4:
217.195.161.90 / 32
pass if the sender's IP is between
217.195.161.90 and 217.195.161.90 (inclusive).
O2 Czech Republic, a.s.
AS29321
or else
ip4:
109.72.0.73 / 32
pass if the sender's IP is between
109.72.0.73 and 109.72.0.73 (inclusive).
O2 Czech Republic, a.s.
AS49767
or else
ip4:
109.72.0.62 / 32
pass if the sender's IP is between
109.72.0.62 and 109.72.0.62 (inclusive).
O2 Czech Republic, a.s.
AS49767
or else
ip4:
109.72.0.70 / 32
pass if the sender's IP is between
109.72.0.70 and 109.72.0.70 (inclusive).
O2 Czech Republic, a.s.
AS49767
or else
~all
soft fail the email's SPF check.

Included records

v=spf1 mx ip4:217.195.160.0/27 ip4:217.195.161.90 ip4:109.72.0.73 ip4:109.72.0.62 ip4:109.72.0.70 ~all

IP ranges

O2 Czech Republic, a.s.
AS49767
O2 Czech Republic, a.s.
AS29321
O2 Czech Republic, a.s.
AS29321
O2 Czech Republic, a.s.
AS49767
O2 Czech Republic, a.s.
AS49767
O2 Czech Republic, a.s.
AS49767