Manual Chapter : Creating an address space for Office 365

Applies To:

  • BIG-IP APM

    21.0.0, 17.5.1, 17.5.0, 17.1.3, 17.1.2, 17.1.1, 17.1.0

back-action Configuring Address Spaces

Updated Date: 04/01/2026

Creating an address space for Office 365

Create an address space to provide a range of IPv4 and IPv6 subnets, and DNS names using Office 365’s auto-discovery URL.

  1. On the Main tab, select Access > Connectivity / VPN > Network Access (VPN) > Address Spaces.

    The Address Spaces list appears.

  2. Click Create.

  3. In the Name field, type a unique name for the address space.

  4. In the Description field, specify a description of the address space.

  5. Select Office 365 in the Type list.

  6. In the Discovery URL field, type the Office 365’s external dynamic .json file that lists URLs for auto-discovery endpoints. The default URL is https://endpoints.office.com/endpoints/worldwide?clientrequestid=b10c5ed1-bad1-445f-b386-b919946339a7.

    Note: Microsoft recommends generating a unique GUID for each machine that calls the web service. For more information, refer to the Office 365 IP Address and URL web service page on the Microsoft Docs website.

  7. In the Trusted Certificate Authorities list, select the trusted CA bundle to establish a trust in the discovery URL for Office 365.

    Note: For additional security, F5 recommends creating a new CA trust certificate to establish trust in Office 365 endpoints instead of using the default CA bundle.

  8. Specify the response size limit from the provider endpoints in the Max Response Size field. The default is 128 KB.

  9. In the Frequency list, select the frequency for the discovery run to be performed. The system downloads the endpoint information from the discovery URL and updates the address space. If using the Custom option, the maximum frequency is 1576800 minutes (3 years).

  10. Click Finished.

The address space displays in the Address Space list. The IPv4 Address Space, IPv6 Address Space, and DNS Address Space fields are displayed after the creation of address space and are auto-filled by the endpoints from the Discovery URL list.