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Domain Names and Extentions
100
Official college and university pages always use this extension.
What is .edu?
200
This is the domain of all government pages.
What is .gov?
300
Mostly used by nonprofit organizations
What is .org?
400
Health information can be found on sites using this in the domain name.
What is .nih?
500
.us is an example of this
What is a country code?