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Lookups
1
Issue
163,841
IPv4 addresses
7.92 ⋅ 10
28
IPv6 addresses
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable.
v=spf1 ip4:66.147.240.0/20 ip4:69.89.16.0/20 ip4:74.220.192.0/19 ip4:67.222.32.0/19 ip4:70.40.192.0/19 ip4:67.20.64.0/18 ip4:173.254.0.0/17 ip4:50.87.0.0/16 ip4:69.195.64.0/18 ip6:2605:DC00::/32 a mx ptr ~all
Copied
Terms
ip4:
66.147.240.0 / 20
pass
if the sender's IP is between
66.147.240.0 and 66.147.255.255 (inclusive).
66.147.240.0 and 66.147.255.255 (inclusive).
Unified Layer
AS46606
or else
ip4:
69.89.16.0 / 20
pass
if the sender's IP is between
69.89.16.0 and 69.89.31.255 (inclusive).
69.89.16.0 and 69.89.31.255 (inclusive).
Unified Layer
AS46606
or else
ip4:
74.220.192.0 / 19
pass
if the sender's IP is between
74.220.192.0 and 74.220.223.255 (inclusive).
74.220.192.0 and 74.220.223.255 (inclusive).
Unified Layer
AS46606
or else
ip4:
67.222.32.0 / 19
pass
if the sender's IP is between
67.222.32.0 and 67.222.63.255 (inclusive).
67.222.32.0 and 67.222.63.255 (inclusive).
Unified Layer
AS46606
or else
ip4:
70.40.192.0 / 19
pass
if the sender's IP is between
70.40.192.0 and 70.40.223.255 (inclusive).
70.40.192.0 and 70.40.223.255 (inclusive).
Unified Layer
AS46606
or else
ip4:
67.20.64.0 / 18
pass
if the sender's IP is between
67.20.64.0 and 67.20.127.255 (inclusive).
67.20.64.0 and 67.20.127.255 (inclusive).
Unified Layer
AS46606
or else
ip4:
173.254.0.0 / 17
pass
if the sender's IP is between
173.254.0.0 and 173.254.127.255 (inclusive).
173.254.0.0 and 173.254.127.255 (inclusive).
Unified Layer
AS46606
or else
ip4:
50.87.0.0 / 16
pass
if the sender's IP is between
50.87.0.0 and 50.87.255.255 (inclusive).
50.87.0.0 and 50.87.255.255 (inclusive).
Oracle
AS31898
or else
ip4:
69.195.64.0 / 18
pass
if the sender's IP is between
69.195.64.0 and 69.195.127.255 (inclusive).
69.195.64.0 and 69.195.127.255 (inclusive).
Unified Layer
AS46606
or else
ip6:
2605:dc00:: / 32
pass
if the sender's IP is between
2605:dc00:: and 2605:dc00:ffff:ffff:ffff:ffff:ffff:ffff (inclusive).
2605:dc00:: and 2605:dc00:ffff:ffff:ffff:ffff:ffff:ffff (inclusive).
or else
a
pass
if the sender's IP address is in the A or AAAA record of this domain.
1 IPv4 address
or else
mx
pass
if the sender's IP address is in the A or AAAA record of this domain.
or else
PTR checks should no longer be used. See
RFC 7208, section 5.5
.
or else
~all
soft fail
the email's SPF check.
Included records
v=spf1 ip4:66.147.240.0/20 ip4:69.89.16.0/20 ip4:74.220.192.0/19 ip4:67.222.32.0/19 ip4:70.40.192.0/19 ip4:67.20.64.0/18 ip4:173.254.0.0/17 ip4:50.87.0.0/16 ip4:69.195.64.0/18 ip6:2605:dc00::/32 a mx ptr ~all
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable