Michael Peddemors via mailop skrev den 2024-03-11 23:54:
host -t TXT save.ca
... so.. basically hard block everything except 1/2 the internet..
the other half is "v=spf1 +all" ? :)
if one likes no maintained ranges
225 netblocks are authorized
2,583,457 individual IPv4 addresses
i did not count ipv6
34 / 10
DNS-querying mechanisms / modifiers to resolve the record
Duplicate netblock authorization
The following netblocks have been authorized more than once. Duplicates
usually indicate inefficient records or redundant "include" mechanisms,
and should be removed.
Netblock Occurrences
170.10.146.242/32 4
170.10.144.242/32 4
40.92.0.0/15 4
40.107.0.0/16 4
52.100.0.0/14 4
104.47.0.0/17 4
199.255.192.0/22 3
199.127.232.0/22 3
69.169.224.0/20 3
23.249.208.0/20 3
23.251.224.0/19 3
76.223.176.0/20 3
52.82.172.0/22 3
76.223.128.0/19 3
216.221.160.0/19 3
142.250.141.27/32 2
192.206.144.0/21 2
74.205.174.24/32 2
76.74.201.32/27 2
54.240.0.0/18 2
54.240.64.0/19 2
54.240.96.0/19 2
205.139.104.0/22 2
216.235.196.0/22 2
216.235.200.0/21 2
oh well :)
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