grandma_genie - 3:30 am on Aug 22, 2012 (gmt 0)

There are several different IPs that have come onto the server with that referer. Two are from France. One is Chicago. This has been happening for a few months, so I blocked the IPs. That is why they are getting the 403s.

188.165.221.nnn - OVH SAS
173.208.87.nn - Ubiquity Server Solutions Chicago
37.59.4.nnn - OVH SAS

My site is in the USA. I'm assuming that whatever they are attempting isn't working. But they keep doing it, nevertheless.

It appeared to be some type of test. Is this something other webmasters are seeing in their logs? What does it mean? Should I be concerned?