Currently, I have it where anyone who attempts to access my server IP address as a website (example:
http://nnn.nnn.nnn.nnn) will be redirected to a domain name with the original request URI appended. For example,
http://nnn.nnn.nnn.nnn/test will be redirected to
The last time I ran the seo tool at seositecheckup.com on my site, it mentions that I should have the IP address redirect to the domain as explained above.
The following URL also suggests the same:
From a performance point of view, I feel I could make any request beginning with http://nnn.nnn.nnn.nnn return only errors and not log any of them, but the question is, are there any important SEO robots out there (such as any web crawlers in the world) that require scanning a website by IP address?