In February we received a new /20 CIDR from ARIN. I felt that we might be caught by the filters at ISPs like Sprint (http://www.sprint.net/filter.htm). I contacted Sprint twice and spoke to two different engineers, both told me that they were not filtering as their page described, and they would allow advertisements for /20 in 206/8 - 233/8. Since that time I have spoken to several people who purchase transit from Sprint, and they do indeed see my advertisements. Looking at NetFlow stats I can't find any major provider that we have not had traffic flow between. I assume they had to have accepted my advertisements, nobody runs BGP and default routes :). BTW: I also contacted, and received a similar response from ANS. On Thu, 17 Jun 1999, I Am Not An Isp wrote:
And it might interest you to know that, to the best of my knowledge, neither EBONE (Sean's current employer) or Sprint (Sean's former employer) use that type of filter any longer. The only thing I can see from any big providers is filtering on /24s. (If someone knows differently, please correct me. I'm just commenting on what I see - I have no first hand knowledge of the filters in anyone else's routers.)
======================================================================= Michael Lucking Michael@Lucking.COM