<div>First result on Google: <a href="https://docs.microsoft.com/en-ca/office365/enterprise/urls-and-ip-address-ranges?redirectSourcePath=%252farticle%252fOffice-365-URLs-and-IP-address-ranges-8548a211-3fe7-47cb-abb1-355ea5aa88a2" title="https://docs.microsoft.com/en-ca/office365/enterprise/urls-and-ip-address-ranges?redirectSourcePath=%252farticle%252fOffice-365-URLs-and-IP-address-ranges-8548a211-3fe7-47cb-abb1-355ea5aa88a2">https://docs.microsoft.com/en-ca/office365/enterprise/urls-and-ip-address-ranges?redirectSourcePath=%252farticle%252fOffice-365-URLs-and-IP-address-ranges-8548a211-3fe7-47cb-abb1-355ea5aa88a2</a></div><br><div class="gmail_quote_attribution">On Sep 25 2018, at 12:13 pm, David Bass <davidbass570@gmail.com> wrote:</div><blockquote><br><div><div>Does anyone have a good list of all of the US IPs used for O365?  Not looking for specific IPs, and can just use the blocks. </div><div><br></div><div>Thanks!</div></div></blockquote>