What is a domain extension?#
In example.com, the com part is the domain extension. Its technical name is TLD, or top-level domain. Each extension is managed by an organization, and the registration terms differ from one to another.
Types#
- Generic: such as com, net, org and info
- Country-code: such as de for Germany, uk for the United Kingdom and fr for France
- Specialized or new: such as shop, blog, tech and app
Which one should I choose?#
- com: the best known, and suitable for an international audience
- Country-code extensions: signal a link to a specific country and build trust with a local audience; some require specific documents or eligibility
- Specialized extensions: useful for a defined field, but less familiar to people
Example#
A business can register both: the com for brand protection and a country extension to win the trust of local customers, and redirect one to the other.
What matters?#
- Check the name across related extensions to reduce imitation and abuse.
- Cheaper extensions may have a weaker reputation in some filters or email systems.
- Renewal and transfer rules differ between extensions.
Common mistake#
Picking an odd extension only because the name is available. If people cannot remember the address, typos become more likely.