On Windows systems, you can use nslookup from the command prompt (using cmd.exe) for the both the reverse and forward DNS lookup. Next, let’s look at some other methods that do not require a browser: Reverse & Forward DNS Lookup in Windows So far, so good! But now let’s confirm with a corresponding forward lookup:Īnd indeed: the forward lookup confirms that the matches the original IP address we entered: 157.55.33.18.

Here’s an example of a reverse DNS lookup for IP address 157.55.33.18 using h ttp://As you can see, the IP address we entered resolved to a name ending in.

Instead of using command-line tools supplied by your operating system, you can use one of the many web-based reverse DNS lookup tools. We will look at how to do this in Windows and Linux, but let’s start from within your favorite browser using a web-based tool: Web-Based Reverse DNS & IP Lookup Tools Do a forward DNS lookup using the name from step 1 to confirm that it resolves back to the same IP address.Perform a reverse DNS lookup using the IP address from the logs to verify that it resolves to a name that end with.If you see what appears to be Bingbot traffic in your server logs based on a user agent string, for example Mozilla/5.0 (compatible bingbot/2.0 +), and you want to know if this traffic really is originating from a Bing server, you can take the following steps: Since we posted about this topic a long, long time ago (especially if we’re counting in Internet years), it’s time for a refresher on how to verify that a bot visiting your site claiming to be a Bing crawler is really coming from Bing.

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