The called claming to be a company called comado. Asked for the person in charge of network security reguarding and expiring SSL certificate. When questioned what certificate they were talking about and what it was used for they hung up.

From our security investigation it appears they are blind calling responsible parties for domains. When I called the number back they answered with no company name. When I asked what they did, they said they are a certificate authority. They claimed to be running a call center and that the "lead" information must have been in error. They denied knowing anything about the behavior of calling and hanging up when questioned, though it seems to be well documented on the web.

Multiple calls coming in from this number.  No messages left and no response when answered.  Call backs are answered but no talking, music in the background.  Either state your business and intent, or stop calling!

got numerous calls from this number 201-716-4468. I did not pick up hoping they would leave a message but they did not. Checked on web for this number and saw all these comments from people on this site.

they called, asked to talk to someone in our IT department, i said 'speaking" and they hung up.

201 716 4468 SCAMMERS