Vonage 732-444-4661?

I have been getting this call since I switched, if I don't answer, the phone line will ring continuously when the caller hangs up? I have to pull the plug on the ATA to make it stop. Is this some sort of a Vonage prank?

http://800notes.com/Phone.aspx/1-732-444-4661/2

Duh, I just thought, I can block this number, thanks to Voipo. A feature Vonage never had.