the type of hosting account you have may determine your neighbors.
If you have sites on shared hosting, you may want to check your neighbors:
Free version limited to top 25 results for your IP and 25 for your subnet.
Includes referring domain and backlink totals.
Reverse IP Lookup - Find Other Web Sites Hosted on a Web Server
Questionable sites will be highlighted in Red.
Won't work if you have a dedicated IP.