[dns-operations] Blackhole IANA question
Alberto García Moyano
alberto.garciamoyano at gmail.com
Thu Aug 5 11:17:24 UTC 2010
I am Alberto Garcia, Coms admin in a ISP. I dont really know if you can
answer this question, but IANA has sent me to you... so this is my problem:
we are sending inverse queries to these blackhole servers:
"blackhole-1.iana.org" and "blackhole-2.iana.org",
The inverse queries are asking for private addresses, this traffic is
normal in our network so there is not any abuse. My problem is that i
cant get any response from these servers and the normal operation for
these queries is (from the web http://www.iana.org/abuse/faq.html):
"Since the RFC 1918 addresses should never be used on the public
Internet, there should be no names in the public DNS that refer to them.
Hence, an inverse lookup on one of these addresses should never work.
The IANA blackhole servers respond to these inverse queries, and always
return an answer that says, authoritatively, that "this address does not
exist". Because of the caching noted above, this is far better than
simply not responding at all, so the blackhole servers are provided as a
I have also tried to do a query from my PC in my home, and i didnt get
DNS request timed out.
timeout was 2 seconds.
*** La petición a [22.214.171.124] a caducado
Can you tell me if there is any problem with your blackhole servers ? The
problem is mine?
Thank you in advance
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