We noticed something strange. We have a cell phone with its own LTE Internet and the office with cable internet; both from the same provider. When out of the office, obviously the cell uses its LTE data for Internet and when in office, the cell connect to the Internet using the office wifi.
We noticed last week that the user complained that when visiting a page while using the LTE Internet (i.e. without wifi) he gets a "block.opendns.com" message. But when using the office wifi there were no blocking.
Please explain why the difference in permission from the same provider.