The number of characters that can be used in a domain name depends on the top-level domain (TLD) chosen. For example, .com and .org TLDs allow domain names of up to 63 characters in length, including the TLD, while .au TLDs have a maximum length of 26 characters, including the TLD. It is important to consider that shorter, memorable domain names are often more effective for branding and user experience, and longer domain names may not be supported by certain TLDs or web hosting providers. The number of characters allowed in a domain name is determined by the specific rules set by the relevant domain name administrator. iWebHost Australia can help find a domain name that meets all requirements and fits branding and business needs.