Domain Name System (DNS)

2.

DNS Architecture and Hierarchy

2.1.

Hierarchical Namespace Structure

2.1.1.

Tree-Based Organization

2.1.2.

Distributed Authority Model

2.1.3.

Delegation Principles

2.2.

2.2.1.

Root Zone Function

2.2.2.

Root Zone File Structure

2.2.3.

Root Server Network

2.3.

Top-Level Domains

2.3.1.

Generic Top-Level Domains

2.3.1.1.

2.3.1.2.

New gTLD Program

2.3.1.3.

Unrestricted gTLDs

2.3.1.4.

Restricted gTLDs

2.3.2.

Country Code Top-Level Domains

2.3.2.1.

ISO 3166 Standards

2.3.2.2.

National Administration

2.3.2.3.

Internationalized ccTLDs

2.3.3.

Sponsored Top-Level Domains

2.3.3.1.

Community-Based TLDs

2.3.3.2.

Specialized Use Cases

2.3.4.

Infrastructure Top-Level Domains

2.3.4.1.

2.3.4.2.

Special Use Domains

2.4.

Second-Level Domains

2.4.1.

Registration Process

2.4.2.

2.4.3.

Registry Function

2.4.4.

Domain Ownership Rights

2.5.

2.5.1.

Subdomain Creation

2.5.2.

Delegation Authority

2.5.3.

Organizational Uses

2.5.4.

Technical Implementation

2.6.

2.6.1.

Zone Definition

2.6.2.

Zone vs Domain Distinction

2.6.3.

Zone Authority Boundaries

2.6.4.

Zone Delegation Process

2.6.5.

Zone File Management

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3. DNS Server Types and Roles