[as112-ops] DNS Blackhole servers requests question

Roberto Carna robertocarna36 at gmail.com
Fri Apr 20 12:27:42 UTC 2018


Dear, I've executed a traceroute and I see that the last hop is a node
from Hurricane Electric Internet Service, which is part of AS112
operators.

Do you know if Hurricane Electric have had any problem with its
blackhole service during last days ?

Thanks again, regards!!!

2018-04-18 16:36 GMT-03:00 Jens Ott - Opteamax GmbH <jo at opteamax.de>:
> Hi,
>
> as said by others, the blackhole servers are anycasted. Maybe you want to
> share a traceroute of "mtr --report" to the nodes which might help finding
> the operator maintaining the nodes you hit.
>
> Best regards
> Jens
>
> Am 18. April 2018 18:31:48 MESZ schrieb Roberto Carna
> <robertocarna36 at gmail.com>:
>>
>> Dear, I want to use and test the DNS BLACKHOLE servers for RFC 1918
>> network addresses:
>>
>> BLACKHOLE-1.IANA.ORG (192.175.48.6)
>> BLACKHOLE-2.IANA.ORG (192.175.48.42)
>>
>> But every time I query these servers, I can’t reach them.
>>
>> Are they running? Or maybe they don’t work for every people from Internet?
>>
>> In all my attempts to query these blackhole servers, just one time I
>> get a NXDOMAIN valid response.
>>
>> Always I can’t reach them:
>>
>> root at MITLPDNS01:~# host -t NS 10.IN-ADDR.ARPA 192.175.48.6
>> ;; connection timed out; no servers could be reached
>>
>> root at MITLPDNS01:~# host -t NS 10.IN-ADDR.ARPA 192.175.48.42
>> ;; connection timed out; no servers could be reached
>>
>> Please can you help me?
>>
>> I know I can create local DNS zones for RFC 1918 networks in my BIND
>> server, but I want to understand the use of DNS Blackhole servers.
>>
>> Thanks in advance, regards!!!
>>
>> ________________________________
>>
>> as112-ops mailing list
>> as112-ops at lists.dns-oarc.net
>> https://lists.dns-oarc.net/mailman/listinfo/as112-ops
>>
>> !DSPAM:1229,5ad779e520681192916468!
>>
>
> --
> Jens Ott
> Geschäftsführer
>
> Opteamax GmbH
>
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> 53619 Rheinbreitbach
>
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>
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