HKIX Looking Glass lookup

Sometime ago, I was able to tell my colleagues the IP address prefixes advertizied by AS 9269 which is owned by a Hong Kong ISP. At that time, I relied upon www.fixedorbit.com to use the AS lookup tool to find the prefixes.

In fact, HKIX provides a looking glass service that we can look for the IP prefixes advertized or received through a particular AS number. "Looking glass" is an interesting term. I am still looking for the exact defintion meaning in the networking world.