Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hello Kaden Kelsey,
Thanks for your post here.
According to your requirement, I did a lot of tests and researches, but I didn't any related article to meet your requirement. Based on my knowledge, we can add the Trusted IPs in Microsoft 365 admin center or Azure Active Directory. For more instructions, please see: MFA service settings.
If you still want to use Graph API or PowerShell to add trusted IPs, I suggest you post your problem in our Microsoft Q&A forum for further assistance. The reason why we recommend posting there is that you will get more qualified pool of respondents, and other partners who read the forums regularly can share their knowledge with you.
Thanks for your understanding.
Best Regards,
Seven