Indeed, take a look at the lists of azure and o365 domains, they're all over the place: https://learn.microsoft.com/en-us/microsoft-365/enterprise/urls-and-ip-

Indeed, take a look at the lists of azure and o365 domains, they're all over the place: https://learn.microsoft.com/en-us/microsoft-365/enterprise/urls-and-ip-address-ranges?view=o365-worldwide https://learn.microsoft.com/en-us/microsoft-365/enterprise/u... https://learn.microsoft.com/en-us/azure/security/fundamentals/azure-domains https://learn.microsoft.com/en-us/azure/security/fundamental...