Dot gdn is Global Domain Name. A new generic extension that is for everyone, everywhere & everything. GDN is the extension if you are a start-up, a small business, or even a professional in the global world and want to “MAKE YOUR PRESENCE GLOBALLY”. If you are an established brand or company with massive world presence, you can have a. gdn to perfect your niche by using it to drive traffic to your .com website, hence global domain name. It has no boundaries, no restriction and therefore no particular category.