The .NET gTLD is also one of the original top level domains. Many of us remember visiting websites with .NET domain names back on our 14.4 modems. Originally, it was intended for businesses involved in networking technologies. That being said, there are no use restrictions for websites with a .NET extension domain and they can be used for any type of business.
As of this writing, .NET is the third most popular extension, following .COM and .DE, in that order. It is well recognized and quite respectable.
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