The first command returned nothing but the second one returned the following at least a hundred times.
/var/db/aliastables/pfB_BlockListMalware.txt:127.0.0.1
I checked my malware lists and this one seems to be the problem.
http://www.malwaredomainlist.com/hostslist/hosts.txt
I deleted it, forced a reload and it continued to show the loopback address listed in the malware block list. So, I disabled the entire list, forced a reload, re-enabled it, forced another reload and, while I'm not entirely sure it's still using the malware blocklist, at least it's not returning the loopback address when I enter the command anymore.
I might try rebooting my router, just to see if that sorts everything out.
Either way, thanks for the help.