SGIX coming soon. 

You can ping and trace to ping.mesh.ad.jp(both IPv4 and IPv6).

IRR Records should be viewed with source set to RADB or JPIRR. There are colliding records with the same AS-SET name, but from a different AS on RIPE. 

We are currently not accepting new sessions at JPNAP.

See here for Japanese version of the peering policy http://www.biglobe.co.jp/press/data/PeeringPolicy_BIGLOBE.pdf