A quick script that runs through all your active peers on a router (using snmp), and builts an aut-num, that you can use as a base template to send off to RIPE. It won't work on anything but a base config, and only on cisco routers right now (probably). It also may not get the export/import rights, so you do need to check it throuroughly by hand.
Some example output is here
It's not really uberusefull, however, someone may make use of it...
don't use this as an excuse to not check your aut-num is complete and accurate!
A script that generates a graph of IP allocation usage based upon RIR data, download here