Webmasters Stack Exchange is a question and answer site for pro webmasters. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I'd like to find the IP range of the "Microsoft Corp" network provider.

How can I find this out? So far I've only been able to find this site which has a list of ip addresses, not necessarily an explicit range.

There is a related Stack Overflow question, but doing a "whois" on any whois site I've yet found doesn't give a range (have left a comment hoping for clarification)

share|improve this question
I am concerned over what the motive of this question is. I can use my geo ip database, write a bit of code and extract a list from about a year ago but I am concerned what this list would be used for. – closetnoc Feb 22 '14 at 2:21
yes, I'm also curious. – PatomaS Feb 22 '14 at 4:03
To be specific. I have about 140 or so ip address ranges that I can extract. But I would want to make sure it is for a good purpose before I write code and post it publicly. – closetnoc Feb 22 '14 at 4:13
Thanks for the responses – this is a bit long winded, but I'm wanting to explore replicating the functionality of a google analytics View filter in a custom built javascript tracking application; the GA filter excludes certain bots from my View including the ones from the "Microsoft Corp" network provider. My idea was to find the IP range(s) that Google uses to ID "Microsoft Corp" – Drewdavid Feb 23 '14 at 4:48

There is no specific range for Microsoft. They are a company, a big one, with a lot of power, but still a company. What they have, are small blocks of IPs here and there on the countries where they have servers. There are many IPs related to Microsoft in the world.

share|improve this answer
of course there is. – user53038 Oct 27 '15 at 15:48

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.