At 1:24 PM -0500 10/22/02, Michael Croft wrote:
At 01:12 PM 10/22/2002, Chris Wagner wrote:aren't all top-level cc domains assigned IP blocks? Isn't this how you block, for instance, all of shangdoung province or chinanet?Any way to setup router entries to block incoming mail from top-level domains (I think that's what you call that type of domain) like .it or .jp or something else similarly?If there's not natively in SIMS, has anyone figured out a workaround?
Not really. DNS maps to IP, not the other way around.
Organizations can get IPs from different registries; international organizations with IPs from different registries can route them arbitrarily. (I.e. an organization with offices in California and China could route the ARIN blocks in China and the APNIC blocks in California if they chose to.)
There are some national registries (Korea, Brazil, Taiwan) that receive IP delegations from the international registries, but these are the exceptions, not the norm. Even in these cases they don't get continuous IP blocks.
--
Alex von Thorn
Deputy Head of Programming, Torcon III http://www.torcon3.on.ca/
Vice-Chair, Seattle in '05 NASFiC bid http://www.seattle2005.org/
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