Hi Alex,
Two quick points:
* The RA route servers no longer exist. Around January 1 of this year, the NSF
sponsored route servers were decomissioned. At serveral exchange points, Route
Server services are now being provided by the commercially funded RSNG project
(see http://www.rsng.net). Other aspects of the RA project (including some
research, RPSL, and IRR management/development) have continued.
* The RSNG route servers announce routes according to policy registered in the
IRR. Any routes not explicitly allowed by policy (RFC-1918 routes, default,
etc.) are effectively filtered in announcements to all RS peers.
- Craig