The IPs have changed a few times since the document’s inception, so I cross referenced the documented O365 IPs with ARIN’s database. I then chose to implement the CIDR as defined by ARIN (YMMV).
https://whois.arin.net/rest/org/MSFT/nets https://whois.arin.net/rest/org/MSFT-Z/nets ________________________________ Ryan From: NANOG <nanog-boun...@nanog.org> On Behalf Of Ken Matlock Sent: Tuesday, September 25, 2018 10:20 AM To: m...@kenweb.org Cc: NANOG <nanog@nanog.org> Subject: Re: O365 IP space This list? https://support.content.office.net/en-us/static/O365IPAddresses.xml<https://urldefense.proofpoint.com/v2/url?u=https-3A__support.content.office.net_en-2Dus_static_O365IPAddresses.xml&d=DwMFaQ&c=birp9sjcGzT9DCP3EIAtLA&r=sqQMNfenuGWZfvPw2xpRcgpM9ZSFgu41ZF5latIZEjU&m=VBYtuXSPTTxmolNwQc1HbU5bCG3Ra_V7W2-CH99aMTI&s=JSlkyznYoa5TIferCRSBDkyCkm76YZXzn0vbD_o5WlE&e=> From the linked-above page (it's somewhat obscured). Ken On Tue, Sep 25, 2018 at 11:14 AM ML <m...@kenweb.org<mailto:m...@kenweb.org>> wrote: In the past I've pulled down an XML file that included the IP space for all of the O365 products. Then I filtered, sorted and aggregated what I wanted for my internal use via a script. On 9/25/2018 12:35 PM, David Bass wrote: Sorry, I should have stated that I have already searched, and have seen the above mentioned docs as well as everything else on the first page of the search results. I guess what I was looking for was to see if somebody has already consolidated that list in to something easier to work with. On Tue, Sep 25, 2018 at 11:26 AM Job Snijders <j...@ntt.net<mailto:j...@ntt.net>> wrote: On Tue, Sep 25, 2018 at 12:18:50PM -0400, Steve Meuse wrote: > https://docs.microsoft.com/en-us/office365/enterprise/urls-and-ip-address-ranges<https://urldefense.proofpoint.com/v2/url?u=https-3A__docs.microsoft.com_en-2Dus_office365_enterprise_urls-2Dand-2Dip-2Daddress-2Dranges&d=DwMFaQ&c=birp9sjcGzT9DCP3EIAtLA&r=sqQMNfenuGWZfvPw2xpRcgpM9ZSFgu41ZF5latIZEjU&m=VBYtuXSPTTxmolNwQc1HbU5bCG3Ra_V7W2-CH99aMTI&s=_KHZHGMNq9Z9mueBRFvlAuEXTlrns3DZ_DXSlPUtRhI&e=> I think it is cool that companies take the time and effort to publish such useful lists. Keep it up! Kind regards, Job ________________________________ This email is intended solely for the recipient. It may contain privileged, proprietary or confidential information or material. If you are not the intended recipient, please delete this email and any attachments and notify the sender of the error.
