18 Feb
2004
18 Feb
'04
1 p.m.
You wrote...
There certainly is no such de-facto requirement,
Yes, there is. ICANN (I think, maybe ARIN, forget the organization for sure
which instigated it) now requires it or you get null routed. Of course, it's
enforced via the "trickle down effect".
Just now, for example, I did traceroutes to
218.16.120.204
and 221.4.203.28, two Chinese addresses I found involved in spam
relatively recently.
Last I checked, Chinese internet didn't necessarily
ascribe to all the
rules. Suprising?
Lists aliases in the sense of returning multiple PTRs,
or in the sense
of passing through a CNAME?
A lookup on the IP address that shows the correct host
name, matching the
forward lookup, but which ALSO returns an "alias" as well as the hostname.
This is what will get blocked by AOL, which includes the discussed RFC
sanctioned mechanism for handling reverse delegation on uneven subnet
boundaries.
If the former, do the other names also forward-resolve
to the address
in question?
Yes
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