[ris-int] Length of time an arbitary range has been announced in an arbitary time period

I'm after a nifty interface which will tell me the following:

	For a given IP range (note, not prefix), for how long has prefixes
	that cover said range been announced within an arbitary time period.

Eg, say I want to see how long IP address 1.2.3.4 has been announced in
the last month.  I want to be able to say:

	Show me time announced for 1.2.3.0/24 or less-specific between 1
	Oct and 31 Oct.

Do we have something like this?

--==--
Bruce.