I ran a simple script:
for I in `grep DPT messages | awk '{print $10}' | cut -b5- | sort | uniq`; do 
	echo $I; 
	fwhois $I@whois.arin.net | sed -n "2p"; 
	nslookup -sil $I | sed -n "3,99p"; 
done 

And discovered I had been probed for the SQL Server 7 Admin Port Vulnerability
by several Phoenix business and corporations.  That is to say, more Phoenix 
businesses than any other City in the world (except for Universities).

Come on people - patch your boxes.  Set up firewalls.  Security 101.  Hello?!?

George