-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 10/20/2009 8:01 AM, Shane Short wrote:
I've found pinging a polite email to the whois contact on the ASN -sometimes- gives useful results, but not always.
Be aware that you're not only dealing with router black-holes, but seemingly some people have applied bogon filtering to their BIND name servers also.
If you can provide a non bogon IP within the same AS, it can be useful for the person at the other end-- shows them they have a problem.
References to documents on bogon best practices are a good idea when trying to contact WHOIS contacts as well - our bogon reference page and the IANA IPv4 address space assignments page are probably good places to start on that: http://www.team-cymru.org/Services/Bogons/ http://www.iana.org/assignments/ipv4-address-space/ Shane makes a good point about BIND and other configs - we actually stopped including static bogons in our BIND and BGP/JunOS templates earlier this year because we found they were being used and not updated, despite our warnings not to do so. Best regards, Tim Wilde - -- Tim Wilde, Senior Software Engineer, Team Cymru, Inc. twilde@cymru.com | +1-630-230-5433 | http://www.team-cymru.org/ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkrdzSwACgkQluRbRini9tgJaACfRnjhFKCv7sKUuNc98r+sn0cG DDUAn2K5ASv8Pmi+UCbLw0NM6k64r+AF =Lo8x -----END PGP SIGNATURE-----