知道ip地址怎么查isp
If you rely on any sort of service that requires you to know the IP address of your home internet connection, there’s a good chance you’ve noticed that the number (however frequently or infrequently) changes. Why is that?
如果您依靠某种需要您知道家庭互联网连接IP地址的服务,那么您很有可能已经注意到该数字(无论是频繁还是不频繁)都在变化。 这是为什么?
Image courtesy of EasyDNS, a dynamic DNS service provider.
图片由动态DNS服务提供商EasyDNS提供。
Today’s Question & Answer session comes to us courtesy of SuperUser—a subdivision of Stack Exchange, a community-driven grouping of Q&A web sites.
今天的“问答”环节由SuperUser提供,它是Stack Exchange的一个分支,该社区是由社区驱动的Q&A网站分组。
问题 (The Question)
SuperUser reader Agz is curious why his ISP just doesn’t give him a fixed IP address:
超级用户阅读器Agz很好奇为什么他的ISP不给他固定的IP地址:
Is there any specific reason an ISP will need to change your IP address? What is the purpose of a dynamic IP versus a static IP? For me it seems to happen every 6 months, while for someone I know, it does once a week.
ISP是否有任何特定原因需要更改您的IP地址? 动态IP与静态IP的目的是什么? 对我来说,这似乎每6个月发生一次,而对于我认识的人,它每周一次。
Why indeed? Why not just assign a permanent address to every customer?
为什么会这样呢? 为什么不给每个客户分配一个永久地址呢?
答案 (The Answer)
SuperUser contributor Flimzy offers some insight into the IP assignment methods:
超级用户贡献者Flimzy提供了有关IP分配方法的一些见解:
When ISPs were first starting, everyone connected to the Internet over a modem. And most people used the Internet for a few minutes to a few hours per week. Assigning a static IP to every subscriber would have been very expensive, for something that most people used just a few minutes a week.
首次启动ISP时,每个人都通过调制解调器连接到Internet。 大多数人每周都会使用互联网几分钟到几个小时。 为每个用户分配静态IP的成本非常高,因为大多数人一周只使用几分钟。
As broadband connections have become more common, the practical reasons for not assigning a static IP have become much less noticeable, as now the majority of connections are “always-on”–even when nobody is (actively) using the Internet.
随着宽带连接变得越来越普遍,不分配静态IP的实际原因也变得不那么明显了,因为现在大多数连接都是“始终在线”的,即使没有人(活跃地)使用Internet。
So there’s a bit of a historical reason not to use static IPs–customers are already accustomed to using dynamic IPs.
因此,有一些历史原因不使用静态IP,客户已经习惯使用动态IP。
When modern ISPs enforce dynamic IPs these days, it may be in part to distinguish between “consumer” and “professional” services–by reserving static IPs for customers who pay more, it gives customers who need that feature an incentive to upgrade their service level.
如今,当现代ISP强制使用动态IP时,可能部分地区分“消费”服务和“专业”服务-通过为支付更多费用的客户保留静态IP,它为需要此功能的客户提供了提升其服务水平的动力。
It can also serve as a deterrent for people abusing their consumer-grade service. Many ISPs, for instance, explicitly prohibit running “servers” on a home Internet connection. If every home user had a static IP, they’d be more inclined to abuse such terms of service.
它也可以阻止滥用消费者级服务的人们。 例如,许多ISP明确禁止在家庭Internet连接上运行“服务器”。 如果每个家庭用户都有一个静态IP,他们将更倾向于滥用此类服务条款。
It’s also less of a management problem to assign customers dynamic IPs. If you move across town (but within the same ISP’s service area), there’s no need to re-assign how your static IP is routed; you’ll just get a dynamic IP that exists in the new neighborhood.
为客户分配动态IP也不是一个管理问题。 如果您在城镇中移动(但是在同一ISP的服务区域内),则无需重新分配静态IP的路由方式; 您将只获得新邻居中存在的动态IP。
Now that you know why you routinely receive a different IP address, check out our article How To Easily Access Your Home Network From Anywhere With DDNS to configure your home network to use a free dynamic DNS service to easily find your way home no matter how many times your ISP changes your IP.
现在,您知道为什么要例行收到其他IP地址,请查看我们的文章如何使用DDNS从任何地方轻松访问家庭网络,以配置家庭网络以使用免费的动态DNS服务轻松地找到回家的方式ISP更改IP的次数。
Have something to add to the explanation? Sound off in the the comments. Want to read more answers from other tech-savvy Stack Exchange users? Check out the full discussion thread here.
有什么补充说明吗? 在评论中听起来不对。 是否想从其他精通Stack Exchange的用户那里获得更多答案? 在此处查看完整的讨论线程。
翻译自: https://www.howtogeek/163747/why-do-isps-change-your-ip-address/
知道ip地址怎么查isp
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