[ppml] Another question on Policy Proposal 2007-8
Ted Mittelstaedt
tedm at ipinc.net
Thu Mar 8 13:29:20 EST 2007
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>-----Original Message----- >From: ppml-bounces at arin.net [mailto:ppml-bounces at arin.net]On Behalf Of >Edward Lewis >Sent: Thursday, March 08, 2007 4:56 AM >To: ppml at arin.net >Cc: ed.lewis at neustar.biz >Subject: [ppml] Another question on Policy Proposal 2007-8 > > >The discussion on 2007-8 caused me to ask this question of myself: > >What if I am looking to buy a company that has address space. When >listing the assets of the company, should the number resources ever >be included? The answer, if the space has come from ARIN (or any >RIR) is no. But what if the resources were obtained pre-RIR? > With the continual increase in spammers there are a lot of sites that are starting to block traffic from pre-RIR assignments that appear to have no justification for existence or are known spam sources. I know of one /24 that a customer of ours had, for example, years ago. That customer disconnected from us and their new ISP didn't route their number block. So today there is a /24 that is just floating around out there, it is 199.248.255.0/24 to be specific. They still have it and they have not used it in years. About a year ago I submitted documentation history to ARIN to try to get this purely for experimentation sake and they needed a signature from someone at the owner so I abandonded the attempt. Lest you think that upstream networks are blocking, think again. We acquired an ISP last year connected to cogentco. I was rather amused to find that I could advertise any number block I wanted through cogentco, they do -no- BGP route filtering of any kind, at least not that I could find. >Assuming there is a difference between resources obtained from ARIN >or before ARIN/RIR, can I tell this from ARIN's whois server? During >the due diligence phase of acquisition I probably should know if the >address space comes under ARIN's transfer policy. > >Is there anyway to tell if resources fall under an ARIN RSA or under >any RIR RSA? I tried to compare the whois entry for MIT's network >(18.0.0.0/8) which I know has been around a while to something that >has been more recent but I haven't been able to pull a "direct >assignment" from the whois. (Are "direct assignments" still done?) > The above number block I mentioned was a direct assignment, and yes it is still present in whois. >The first question is - is there a difference, as far as being >"property", of space handed out pre-RIR and from an RIR. If the >difference is "unclear" vs. "not property", I understand. > >The second question is - is if there is a difference, how can this be >determined from whois? > You really can't. The best thing is to check any convenient Looking Glass and see if the block is being advertised. If it is not, and it is not present in anyones whois or rwhois, it is open season. Your greatest difficulty would be finding an upstream feed willing to advertise it. If for example you connected to us, there is no way in hell I would take an advertisement from you for the block unless it appeared in a numbering authority's whois. My feeds have similar policies. But there are plenty of scummier networks out there who you could pay enough money to and get them advertised. And if you are a large transit AS then none of your peers are going to be filtering anyway. Ted
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