Hi Sanj,
Thanks for coming back to us on this one.
We don't have a list of the names of the networks that we can give I'm afraid. You would need to try each one in turn and see which one works best.
It's also worth noting that whilst we do have agreements in place, we don't own any of the masts and therefore there are times you may be unable to get a signal or a connection. It may be that the area you are in, has no network that we have an agreement in.
As you've tried the toolkit, all we can advise now is to keep trying the networks that are available to you.
Thanks,