Domain Extensions Explorer

Find your perfect TLD

7 lessons

3-4 hours

About this course

With over 1,500 TLDs available, choosing the right extension matters. This course explores traditional TLDs, new gTLDs, country codes, and specialty extensions to help you make informed decisions.

What you'll learn

Understand the TLD landscape in 2025
Choose between traditional and new TLDs confidently
Identify valuable ccTLD opportunities
Avoid premium pricing surprises

Course Content

Understanding Domain Extensions

Start here

Start with the basics: what TLDs are, how they're organized, and why they matter.

TLDs are managed by registries under ICA...Generic TLDs (gTLDs) vs country-code TLD...

10 min

New gTLDs vs Traditional Extensions

Should you go with .com or try something new like .app or .io? Compare the options.

.com still dominates in trust and recogn...New gTLDs offer better availability and ...

15 min

Country Code TLDs Guide

ccTLDs can signal local presence or offer creative hacks. Learn the landscape.

Some ccTLDs restrict registration to res...Others are open and used globally (.io, ...

14 min

.IO Domains for Tech Startups

Why did .io become the tech startup favorite? Explore this popular ccTLD.

.io resonates with input/output computin...Premium pricing but high credibility in ...

11 min

.AI Domain Opportunities

With AI booming, .ai domains are hot. Learn about this market and its potential.

.ai is the ccTLD for AnguillaPremium pricing reflects high demand

12 min

Premium Domains Explained

Why do some domains cost $10 and others $10,000 at registration? Understand premium pricing.

Registries set premium tiers for desirab...Premium renewals may or may not match re...

13 min

Second-Level Domains Explained

Some TLDs have second-level categories like .co.uk. Understand this structure.

SLDs organize domains by purpose (com, o...Common in ccTLDs like .uk, .au, .jp

9 min

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Who it's for

First-time domain buyers
Startups choosing a brand name
International businesses
Domain investors exploring new TLDs