Currently SharkHosting has a number of servers and corresponding nameservers to go with them. Depending on which server your web hosting account is stored will determine the nameservers for your domain name. Some may have the same nameserver IPs as we do have a couple of large servers that are split into smaller blocks.
You will also have been sent an email titled "Your Web Hosting & Nameserver Details". This will advise you of the nameservers to use for your domain. If you cannot locate this you can also login to your Client Area, move your mouse over My Account to the top right of the screen and select Email History. You will then be able to view this email from here. Failing that, you can also go to My Account and select My Services > Manage Product and your nameservers are displayed there also.
Any problems or question, just drop us an email at email@example.com.