[dns-operations] potential future same-quad open resolvers - 25.25.25.25 and 25.26.27.28
Viktor Dukhovni
ietf-dane at dukhovni.org
Wed Nov 7 18:41:18 UTC 2018
> On Nov 7, 2018, at 9:21 AM, Royce Williams <royce at techsolvency.com> wrote:
>
> Back when Quad9 came out, on a whim I surveyed all same-quad IPs, and 3.3.3.3 seemed like a natural add.
Speaking of "same quad surveys", I am finding that various "same quad" addresses
are somewhat popular with folks who want to make up a fake MX host as a (largely
misguided IMHO) spam reduction measure, where they list a dead last (and more
rarely even first) MX host.
In the DNSSEC/DANE survey I see fake MX host counts as follows:
209 1.1.1.1
3 2.2.2.2
3 3.3.3.3
1 5.5.5.5
1 7.7.7.7
66 8.8.8.8
6 10.10.10.10
4 11.11.11.11
1 21.21.21.21
1 42.42.42.42
1 88.88.88.88
1 99.99.99.99
1 64.64.64.64
6 111.111.111.111
13 123.123.123.123
--
--
Viktor.
More information about the dns-operations
mailing list