SLD

Second-Level Domain

The portion of a domain name located directly to the left of the top-level domain (TLD) in a web address. It typically represents the main identity or name of a website or organization.

Example: In the domain name martech.zone:

• “martech” is the SLD
• “.zone” is the TLD

Key Points:

• The SLD is a critical part of a domain name because it is what users typically recognize and associate with a brand, product, or service.
• It is often customized by the domain owner during registration.
• Together, the SLD and TLD make up the complete domain name (e.g., example.com).

Usage:

• The SLD often reflects the name of a business, individual, or topic (e.g., “google” in google.com or “martech” in martech.zone).
• It must be unique within the context of the chosen TLD (e.g., no two .com domains can have the same SLD).

Related Terms:

• Domain Name: The complete address, including both SLD and TLD.
• TLD (Top-Level Domain): The suffix portion of a domain name (e.g., .com, .org, .edu).
• Subdomain: A prefix added to the domain (e.g., “blog” in blog.example.com).

• Abbreviation: SLD