Domain Name Is It Case Sensitive. No they are not case sensitive. The Domain Name System DNS is the global hierarchical replicated distributed database system for Internet addressing mail proxy and other information.
For example it does not matter if you use uppercase or lowercase with Computer Hopes free computer help it still reaches the same page. The same applies to usernames though outdated email servers can misinterpret capitalization in rare cases. The Domain Name System DNS is the global hierarchical replicated distributed database system for Internet addressing mail proxy and other information.
No they are not case sensitive.
To quote RFC 5280 emphasis mine. When Im advertising a Web address or URL I like to use caps in the URL because most web site names are easier to read that way. This is still acceptable since domain names are not case sensitive. No domain name is not case sensitive.