Welcome to our Community Forums! Thank you for your first post and for your query!
You should be able to find your Area Reference number at the top of your bills and at the top of your Welcome email. I can see that you've posted on our Virgin Mobile thread. You can take a look at how to register for your online Mobile account on our website.
You only need an area reference to register for a Media account. 🙂 Let us know how you get on and if you need any further help or asssitance.
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