Following Surfnet's announcement of their as3.5 beacon to the nanog list, I had a quick look at RIS. (see below) For 93 peers the transition mechanism succeeds, the route collectors succesfully recreate a 4-byte AS path with 4-byte origin ASN. However, for 1 peer the RRC01 collector reports AS_TRANS as origin. This suggests the supposed transitive NEW_AS_PATH attribute was lost either in the peer or in one of its upstreams. BTW, has the APNIC 4-byte asn beacon been switched off? RISwhois only 'sees' two IPv4 prefixes with 4-byte origin ASNs: dog [~]; whois -h riswhois dump |grep '^[0-9]*\.[0-9]' 3.7 84.205.88.0/24 74 3.5 145.125.0.0/20 93 The RIS beacon, AS3.7, has somewhat less visibility than the route inserted by Surfnet (seen by 74 instead of 93 peers). -- Rene $ whois -h riswhois 145.125/20 % For more information visit http://www.ripe.net/ris/riswhois.html route: 145.125.0.0/20 origin: AS3.5 descr: SURFNET-NL SURFnet, The Netherlands lastupd-frst: 2007-03-29 11:54Z 80.81.192.8@rrc12 lastupd-last: 2007-04-10 15:27Z 198.32.160.179@rrc11 seen-at: rrc00,rrc01,rrc03,rrc04,rrc05,rrc06,rrc07,rrc10,rrc11,rrc12,rrc13,rrc14,rrc15 num-rispeers: 93 source: RISWHOIS route: 145.125.0.0/20 origin: AS23456 descr: AS_TRANS lastupd-frst: 2007-04-10 03:14Z 195.66.224.68@rrc01 lastupd-last: 2007-04-10 03:14Z 195.66.224.68@rrc01 seen-at: rrc01 num-rispeers: 1 source: RISWHOIS