1. .com 域名：
互联网使.com域名的使用非常流行。它是如此受欢迎，以至于它也可以在最新的键盘按键上看到。 .com是顶级域名。它是最早的通用域之一(与赞助和限制域相反)。它基本上被引入供商业实体使用，但是，由于域的非限制性，它可以被个人和非商业实体使用。 .com域名的价格非常高，因为它们很受欢迎。
例如。 www.google.com、www.bbn.com、www.think.com、www.mcc.com、www.dec.com、www.northrop.com、www.xerox.com。
Google 有一个.com域
2. .net 域名：
.net也是一种通用顶级域。它是 1985 年引入的首批域名之一(与.com和.org 一起)。这种类型的域旨在供网络公司、数据库提供商、托管实体或互联网服务提供商或类似的实体使用。由于其不受限制的性质，它现在被所有类型的实体和个人使用。 .net域的价格低于.com域，因为它不太受欢迎。如今，在许多情况下， .net域名被用作 .com 域名不可用的替代方案。
例如。 www.behance.net、www.broken.net、www.nsf.net、www.nyser.net、www.uu.net、www.sesqui.net、www.mr.net、www.oar.net。
Nordu.net是.net下注册的第一个域名
资料来源：www.nordu.net
.com 和 .net 域之间的区别：
| S.No. | .com | .net | |||
|---|---|---|---|---|---|
| 1. | Is used for general purpose and commercial sites (by for-profit entities). | It is used by networking-based companies or entities such as Internet Service providers and similar infrastructures, by miscellaneous organizations or when the preferred name in .com domain is exhausted. | |||
| 2. | .com is more popular than .net. | It is less popular than .com. | |||
| 3. | The registration is handled by Verisign. The domains can be handled by other registrars (e.g. Google, Go Daddy), however, they ultimately have partnerships or affiliations with Verisign. | .net registrations are also handled by Verisign. | |||
| 4. | It is costlier than .net (due to the popularity of .com domains). | It is cheaper than .com (due to .net being less popular). | |||
| 5. | It is a top level domain (TLD). It is one of the first domains ever created. It is also a generic domain. Generic means it can be used for general purpose. | It is a generic top level domain (gTLD). It is one of the first domains ever created for generic use. | |||
| 6. | It was intended to be used by commercial entities. | It was introduced to be used by networking organizations. | |||
| 7. | It has been derived from the word commercial. It was intended for commercial entities. | It has been derived from the word networking. It was intended for networking entities such as ISPs (Internet Service Providers). | |||
| 8. | The registry website is www.verisign.com. | The registry website is www.verisign.com, that is similar to .com registry site because both are handled by the same unity, Verisign. | |||
| 9. | The first site ever registered under .com domain is www.symbolics.com. | The first site ever registered under .net domain is www.nordu.net. | 10. | Examples : www.google.com, www.bbn.com, www.think.com, www.mcc.com, www.dec.com, www.northrop.com, www.xerox.com. | Examples : www.behance.net, www. broken.net, www. nsf.net, www. nyser.net, www. uu.net, www.sesqui.net, www. mr.net, www.oar.net. |