ftp://ftp.jp.netbsd.org/pub/NetBSD/packages/current-packages/NetBSD/x86_64/  direct

[DIR]4.99.x/  direct  16 twin directories
[DIR]4.0_2008Q3/  direct  83 twin directories
10 B  2008-10-194.0  306+ mirrors
[DIR]3.1_2008Q3/  direct  57 twin directories
10 B  2008-10-193.1  117 mirrors
[DIR]3.1_2008Q4/  direct  66 twin directories
[DIR]4.0_2008Q4/  direct  132 twin directories