域名是什么?域名是做什么的?域名有哪些种类?随着域名的广泛应用,域名的商业价值在不断提升,它已成为代表一个企业形象的标志。下面主要为大家介绍域名的含义和域名有哪些种类?一般用什么比较好?
一、域名是什么?
通俗来说,域名就是网址。举例来说,大家熟悉的百度,www.baidu.com就是一个域名。域名一般由两个或两个以上的词构成,中间用“.”进行分隔,其结构是:四级域名.三级域名.二级域名.一级域名。
二、域名的分类有哪些?
域名根据语言类别进行分类,可分为英文域名和中文域名。上例的www.baidu.com就是英文域名,中文域名举例来说:www.百度.com就是一个中文域名。
英文域名根据后缀又分为很多种,有.com;.cn;.net;.com.cn等。
最右边的区域具有最高级别(顶级域名),表示国家代码。由于美国是国际互联网的发起国,所以它的最高级别域名比较特殊;美国的网络类型分为六类:com(商业)、edu(教育)、gov(政府)、org(其他)和net(网络资源)。其他国家最高级别域名一般都是国家代码,如中国用cn表示。
在我国,二级域名有类别域名和行政区域名两类。类别域名分为6个:ac(科研机构)、com(工商等企业)、edu(教育机构)、gov(政府部门)、net(网络服务机构)、org(非营利性组织)。行政区域名共有34个,适用于我国的各省、自治区、直辖市。
与IP地址相比,域名地址更高级、更直观,因此用户在实际使用时常采用域名地址。但是域名地址不能替代IP地址,因为计算只能识别0和1的数值。注册域名需要申请,大部分机构、企业、事业单位都采用自己单位名称的全拼、缩写或商标来定义自己的域名,以便他人记忆和识别。
杭州IP段展示:
45.250.33.1
45.250.33.2
45.250.33.3
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