Using Mediafast with no WAN (offline)

Hi I am looking to see if there is a way to ‘prefetch’ content on a Pepwave Max HD2 Mediafast, which can then be accessed on the LAN when the unit does not have a WAN connected. I.e. cache a website to view later without an internet connection. Is this supported by Mediafast?

Prefetch Content is based on URL link. The system can’t resolve the IP if WAN connection is not available. Hence, WAN connection is needed if you need to view the downloaded content.