如何判断IP地址属于哪家公司？

发布于 2024-07-25 04:26:42 字数 881 浏览 5 评论 0原文

我正在尝试以编程方式确定与给定 IP 地址关联的公司*。

我的第一个猜测是：

  string hostname = Dns.GetHostEntry(IPAddress.Parse(ip)).HostName;

但是如果反向 DNS 设置不正确，这将不起作用，这似乎 90% 的情况都会发生。

然而，即使反向 DNS 失败，某些网站仍然能够成功确定与特定 IP 关联的公司。例如，在此网站上，ISP 提供商字段有时包含有价值的信息（即公司名称），即使主机名未设置。

使用 .net 实现相同目标的最简单方法是什么？

注意：

我不需要规范的名称。即MS或Microsoft都可以。
我的目标是大公司，它们可能“拥有”自己的 IP 地址范围。
我在Windows上运行，所以默认情况下没有安装unix的whois工具。

关于 whois 的使用进行编辑：有时，没有与 IP 关联的 whois 信息

原文

I'm trying to programmaticaly determine the company* associated with a given IP address.

My first guess was this :

  string hostname = Dns.GetHostEntry(IPAddress.Parse(ip)).HostName;

but this won't work if the reverse DNS isn't set correctly, which seems to happen 90% of the time.

However some websites are still able to successfully determine the company associated with a specific IP even if the reverse dns fails. For example, on this site, the ISP Provider field sometimes contains valuable information (ie the name of the company) even if the hostname isn't set.

What's the easiest way to achieve the same thing using .net ?

Notes :

I don't need a canonical name. ie MS or Microsoft are both ok.
I'm targeting big companies, which are likely to "own" their IP address ranges.
I'm running on Windows, so unix's whois tools are not installed by default.

Edit regarding the use of whois : Sometimes, there's no whois information associated with an IP

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擦肩而过的背影 2024-08-01 04:26:42

您可以从 microsoft edit 安装适用于 Windows 的 whois 命令行工具

：那么您要寻找什么信息？

>whois bbc.co.uk
Domain name:
    bbc.co.uk

Registrant:
    British Broadcasting Corporation

Registrant type:
    UK Limited Company, (Company number: 000057)

Registrant's address:
    Research & Development
    Kingswood Warren
    Tadworth
    Surrey
    KT20 6NP
    United Kingdom

Registrar:
    British Broadcasting Corporation [Tag = BBC]

You can install the whois command line tool for windows from microsoft

edit: then what information are you looking for ?

>whois bbc.co.uk
Domain name:
    bbc.co.uk

Registrant:
    British Broadcasting Corporation

Registrant type:
    UK Limited Company, (Company number: 000057)

Registrant's address:
    Research & Development
    Kingswood Warren
    Tadworth
    Surrey
    KT20 6NP
    United Kingdom

Registrar:
    British Broadcasting Corporation [Tag = BBC]

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