tzcert.go.tz SPF record

5 / 10 Lookups
1 Issue
100,354 IPv4 addresses
1.49 ⋅ 10 28 IPv6 addresses

The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable.

v=spf1 ip4:196.32.240.0/21 ip6:2001:43f8:330::/48 a mx ptr include:google.com ~all Copied

Terms

ip4:
196.32.240.0 / 21
pass if the sender's IP is between
196.32.240.0 and 196.32.247.255 (inclusive).
TANZANIA COMMUNICATIONS REGULATORY AUTHORITY (TCRA)
AS37364
or else
ip6:
2001:43f8:330:: / 48
pass if the sender's IP is between
2001:43f8:330:: and 2001:43f8:330:ffff:ffff:ffff:ffff:ffff (inclusive).
TANZANIA COMMUNICATIONS REGULATORY AUTHORITY (TCRA)
AS37364
or else
a
pass if the sender's IP address is in the A or AAAA record of this domain.
1 IPv4 address
1 IPv6 address
or else
mx
pass if the sender's IP address is in the A or AAAA record of this domain.
1 IPv4 address
or else
ptr:
PTR checks should no longer be used. See RFC 7208, section 5.5 .
or else
include:
google.com
Evaluate this SPF record and pass if it
passes.
or else
~all
soft fail the email's SPF check.

Included records

v=spf1 ip4:196.32.240.0/21 ip6:2001:43f8:330::/48 a mx ptr include:google.com ~all
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable
include:_spf.google.com ~all
2 x ip4 6 x ip6 ~all

IP ranges

196.32.240.0 / 21
TANZANIA COMMUNICATIONS REGULATORY AUTHORITY (TCRA)
AS37364
2001:43f8:330:: / 48
TANZANIA COMMUNICATIONS REGULATORY AUTHORITY (TCRA)
AS37364
196.32.240.43
TANZANIA COMMUNICATIONS REGULATORY AUTHORITY (TCRA)
AS37364
2001:43f8:b80:2::4
TANZANIA COMMUNICATIONS REGULATORY AUTHORITY (TZCERT)
AS328017
196.32.240.55
TANZANIA COMMUNICATIONS REGULATORY AUTHORITY (TCRA)
AS37364
74.125.0.0 / 16
Google
AS15169
209.85.128.0 / 17
Google
AS15169
2001:4860:4864:: / 56
Google
AS15169
2404:6800:4864:: / 56
Google
AS15169
2607:f8b0:4864:: / 56
Google
AS15169
2800:3f0:4000:: / 36
Google
AS15169
2a00:1450:4000:: / 36
Google
AS15169
2c0f:fb50:4000:: / 36
Google
AS15169