If you are sitting on a domain name and want to make some money off of it, there are several ways to do so.
Tip 1: One way is to put a “for sale” sign on your domain name instead of letting it just sit as a blank page or with just a bunch of ads. I would not recommend putting your personal phone number on there due to potential spam that you could be hit with. I would recommend putting an e-mail address that does not necessarily reveal your first and last name.
Tip 2: Sell your domain name through a marketplace like eBay, BuyDomains, Aftermarket.com, GoDaddy, GreatDomains.com, Flippa, or Sedo. Each of these websites take a commission, but it is better to make cash from your domain name instead of making annual payments for the domain name that you want to get rid of. Using these services could also protect you from fraud.
Tip 3: Talk to a domain name broker. There are companies and individuals that connects domain name buyers with potential buyers. Make sure you pick a broker that is credible and has testimonials.