The IP address is showing as Spain for me -
Jazztel.com
I don't think there's much you can do to alert you quickly. You'd basically need to run real-time log analysis which isn't feasible. You could perhaps write something that UH could configure to run say every hour (cron job) to check for an "excessive" (whatever you define that as) number of entries from an IP. You could then be emailed as required.
Ben