ARIN is cracking down on IP Space that is or has been issued (legally) and have been found to have the contact records "out of date" or the e-mail addresses either don't work or their are mailboxes full and so on. You will see more and more of these allocations being removed for failing to act on network issue via their stated ARIN information.
ARIN actions are sometimes not totally predictable, but I've not seen them remove blocks just because contact info is out of date, in this case they will simply mark the ip block as invalid and remove dns servers. Unlike others I actually monitor this and what I have seen suggests the blocks are deleted ONLY if the original company actually does not exist and there exist legal documents to show that (i.e. court ordered liqudation or sometimes in cases of ip block actively being abuse after some investigation they would consider corporate registration data that shows company as being dead for several years to be enough). The other reasons are if ip block admin actually asked for ip block to be removed (sometimes if he's getting large space somewhere else instead). New this year are that ARIN is beginning to remove blocks when it has not been paid renewal fees for some years. This, I think, led to greatly increased (by order of 5) number active bogon routes out of ARIN's direct allocations blocks like 207/8, 209/8, 216/8, 64/8 now showing up at http://www.completewhois.com/bogons/active_bogons.htm When I saw how bad it has become, I've tried sending reports about active bogon routes manually to admins of the networks routing these blocks and this led to some of them routes getting removed (most are just old static routes still present in the routers although some are on purposely ignoring ARIN), but this manual process is time-consuming and for the future I hope to create automated system that will be able to send these reports once per month to admin contacts listed for ASNs routing these blocks (but the reports may not be as well targeted to proper people, when doing it manually I could sometimes enter correct contact when I knew which network it is, automated system will be harder to tune-in, especially given that ARIN contact data listed for ASN whois is also often enough out of data, especially for these old blocks). P.S. On topic to the original post, the Verizon block 206.46.0.0/16 being listed as active bogon on completewhois page (or any other route listed there) are not equivalent to bogon ip block list used for active filtering. The active list is created for monitoring purposes based on routeviews data based on bogon ip lists prior to when exceptions are applied (like current Verizon case), this is so I could monitor if situation has been resolved or not. Just FYI.
A good example was that fellow trying contact RoadRunner's network center. You should be able to do so from their ARIN information on record but... nope they let the numbers changes, e-mails fade and people come and go.
That is a problem with ARIN data that there is no validation of it, there was a policy proposal at ARIN (see http://www.arin.net/policy/2003_16.html) but it was killed (despite support of a lot of people on the meeting and despite that it was already a scaled down version of previous more radical anti-abuse and data validation proposals) so I'm not sure what will happen now. There was also another proposal http://www.arin.net/policy/2004_4.html that also tried to provide for better validity of whois data and it was also killed. Along the lines of killing every whois related proposal at last meeting same also will probably happen to my Whois AUP proposal http://www.arin.net/policy/2004_4.html (for history of this proposal see http://www.elan.net/~william/arin_whoisaup_history.htm) which provides for having a legal "note" that you should not improperly use data from whois queries (did you know ARIN is now the only whois registry that does not have AUP on how the data may or may not be used?), but for that if you dont want it to die you still have a chance to stop it if you voice your opinion and send private email in support of the proposal to petition@arin.net and also post confirmation of your support at ppml@arin.net But otherwise few people like myself trying to do anything about it I'm not sure what will need to happen for ARIN to understand that validity and security of whois data is important and people rely on that all the time and they can't just ignore these issues. Unfortunetly most people who actually use their data also the ones who really dont have time or interest to participate in ARIN political process and as such are not heard at all. -- William Leibzon Elan Networks william@elan.net