Hello NANOG community, Hopefully someone from the Microsoft MCC (connected cache) team is part of this mailing list. We have been fighting for months with Microsoft to get them to accept AS401485 as a valid ASN to host a caching server. However, Microsoft still doesn't recognize this ASN as part of their valid ASN range and claims we need to pay Azure support to get this resolved which simply doesn't make sense in this context. This is quite ironic due to the integration of PeeringDB, which has this ASN listed and verified. [image: image.png] Best regards, Karl -- *Karl Morin* *CTO - Directeur des technologies*