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AIvikings Glossary

SLD

An SLD, or second-level domain, is the part of a domain directly before the TLD, such as `example` in `example.com`.

Last updated July 24, 2026

Quick summary

Term
SLD
Plain-English definition
An SLD, or second-level domain, is the part of a domain directly before the TLD, such as `example` in `example.com`.
Technical definition
An SLD, or second-level domain, is the part of a domain directly before the TLD, such as `example` in `example.com`.
Commonly confused with
second-level domain
Related terms
Domain, TLD, Subdomain

Definition

An SLD, or second-level domain, is the part of a domain directly before the TLD, such as `example` in `example.com`.

Why it matters

The SLD is often the brand, product, or project name in a domain.

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