Hi @Bryan,
Yes, you need to verify the public IPv4 addresses.
Refer this link how validate this: https://learn.microsoft.com/en-us/azure/expressroute/expressroute-faqs#why-does-the-advertised-public-prefixes-status-show-validation-needed-while-configuring-microsoft-peering
Kindly let us know if the above helps or you need further assistance on this issue.
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