Wondering

I am getting a lot of hits from two IP Addresses that belong to United Layer. They host stuff such as the Apache Software Foundation, Alexa (amazon search engine), the EFF and then some more. It’s probably Alexa, but they are grabbing my complete page or so it seems even more so than google and they are not yielding the domain for their ip which is kinda dumb because I might just decide to block it because it could just as well be a spam bot.