Curious RIPE assignments

I was surprised today, when I’ve found out that some IPv4 address spaces are not registered (and probably they are not assigned) in RIPE DB, but they are still used. I thought that this is not possible or it’s not possible for such a long time.

For example the GoogleBot web indexing spider farm uses address space in 66.249.64.0/24 – 66.249.66.0/24 and probably more than this, but I can’t find any record matching this address space in RIPE DB. Is it RIPE‚s fault or is Google using unassigned space for his robots?

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