VSP to use as a forwarding destination with e164

[green]

Hello all
I would like to see some suggestions on choosing the service provider to use as a forwarding destination with e164 service.
Currently I'm using my own Asterisk PBX for that, but I'm looking for a solution for a few other people with PSTN phones only.

So far I have this requirements in mind:
- dialout preset PSTN number via one or more VSP
- time-based rules (to protect from the night calls)
- black list or CLID-based rules (to ignore verification calls)
- should be free (of course another VSP will charge for the actual PSTN call termination)

Thanks!