Interesting method - is he cheating?

Hi guys,

One of my competitors has a few domains that point to 1 site.

Site A - is the actual site
Site B - has the same front page as Site A but seems to point all pages to site A.

Now both appear higher than me in the search engine results :S

Is this fine to do - I'm assuming he has registered a few domains that redirect to the one main site and they have left the front page to look similar.

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SEO Agency Orlando|Digital Agency Florida