This has got to be one of the worst ideas you've come up with recently. The crack pipe must be pretty warm. This would make every provider like Level3 and Cogent...hosters of spammers camouflaged by a lack of publicly available reassignment data. At least with the current system, most providers publish reassignment data, so when you get spammed by discountdeals or ultimate savings, or the like, you can usually look up their address space and block them. Too many providers just don't care about spam as long as the spammers pay.
BS. Cogent provides publically available reassignment info in its rwhois database. Comment: ******************************************** Comment: Reassignment information for this block is Comment: available at rwhois.cogentco.com port 4321 Comment: ********************************************