Who called from 2030063103

I get constantly rung up by these people, but they never say anything, so I now just let the answer machine kick in, but they never leave a message. This is really annoying. I`m also ex directory and with Virgin Media, so it must be something to do with them.

asian sounding chap called last night wanting to know several things. told him to get off the line and hungup

I keep getting these calls and same as everyone else-no-one speaks and when I called back the mailbox was full so an American sounding woman said. It's getting annoying now!

Got a call on my cell from 203-006-3103, missed the call, tried to call back, recording said number could not be completed as dialed.

I am constantely getting calls from this # on my cell phone. tried calling it back and was told I could not call an international phone #. Tried calling it from a land line, and just got a recording. How can I block this stupid #.????