You have a Microsoft 365 subscription that uses Microsoft Defender for Endpoint. You need to add threat indicators for all the IP addresses in a range of 171.23.34.32- 171.23.34.63. The solution…

The correct answer is A. Create an import file that contains the individual IP addresses in the range. Select Import and. This approach is necessary because Microsoft Defender for Endpoint does not support Classless Inter-Domain Routing (CIDR) notation for IP addresses. Therefore, specifying the range as 171.23.34.32/27 or using a range format like 171.23.34.32-171.23.34.63 directly is not…

Submitted by jaden.t· Apr 18, 2026Manage threat mitigation using Microsoft Defender for Endpoint

Question

You have a Microsoft 365 subscription that uses Microsoft Defender for Endpoint. You need to add threat indicators for all the IP addresses in a range of 171.23.34.32- 171.23.34.63. The solution must minimize administrative effort. What should you do in the Microsoft 365 Defender portal?

Options

ACreate an import file that contains the individual IP addresses in the range. Select Import and
BCreate an import file that contains the IP address of 171.23.34.32/27. Select Import and import
CSelect Add indicator and set the IP address to 171.23.34.32 - 171.23.34.63.
DSelect Add indicator and set the IP address to 171.23.34.32/27.

How the community answered

(25 responses)

A
80% (20)
B
12% (3)
C
4% (1)
D
4% (1)

Explanation

This approach is necessary because Microsoft Defender for Endpoint does not support Classless Inter-Domain Routing (CIDR) notation for IP addresses. Therefore, specifying the range as 171.23.34.32/27 or using a range format like 171.23.34.32-171.23.34.63 directly is not supported. Instead, you need to list each IP address individually in an import file and then import this file into the Microsoft 365 Defender portal. https://learn.microsoft.com/en-us/defender-endpoint/indicator-manage

Topics

#Microsoft Defender for Endpoint#Threat Indicators#IP Address#Bulk Import

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