Sims 3 - http://hp843497a29906:8080/WalkupScan/WalkupScanDestinations

I have 2 computers with Sims 3 loaded. One computer will get the following site blocked every 5 minutes:

 

http://hp843497a29906:8080/WalkupScan/WalkupScanDestinations

 

I have tried adding this to the whitelist and on the activity log I have marked "Allow your child to view all content on this website" for this item, but I still get the blocked message.

 

I tried searching the internet for variations of this address with no success.