You're getting exactly what I'm getting. Too bad we can't block an entire area code.

keep getting calls and short blank voicemails from 956-428-3312

Keep getting this number on my cell phone.

The last week I have been calling calls at 4 & 5 in the morning from 956 area code. All calls are from 956-428, then the last 4 numbers are different. 3312, 0003, 2863, 0332, plus more that I didn't write down. I believe they are calling my toll free number. It is my Cruise Planners phone and is always in the middle of the night, and at least 2 calls per night. I called the phone company, they can't help me.
They hang up when I answer. I tried to call the numbers, never get an answer.

The phone company said I can block all calls from 956 area code, but I have clients in Texas.
It is really annoying. I wish I knew how to stop this.

956-428-3312 from a 800 Registry Co. I have a 877 toll free number through my company and I have received a few calls from this number. Whenever I have a call come in through this number and forwarded to my personal cell phone the system documents it and send it to me in an email.

Strange, the call log reads anywhere from 39 seconds to almost 2 minutes but on my phone is always reads that the call lasted 00:00 since I have never answered when they call.

My phone number is on the do not call list!

I have received two of these types of calls from 9564283312 on my toll free number, 1st one on 2011-05-03 and the second on 2011-05-23.  I have received calls with Caller ID of "800 REGISTRY CO" also well from the following numbers:

9564408918
9564283320
9564120249
9564120718
9564120531
9563654083

In all cases, there is nothing when the call is answered

Keep getting this number on my cell phone.

The last week I have been calling calls at 4 & 5 in the morning from 956 area code. All calls are from 956-428, then the last 4 numbers are different. 3312, 0003, 2863, 0332, plus more that I didn't write down. I believe they are calling my toll free number. It is my Cruise Planners phone and is always in the middle of the night, and at least 2 calls per night. I called the phone company, they can't help me.
They hang up when I answer. I tried to call the numbers, never get an answer.

The phone company said I can block all calls from 956 area code, but I have clients in Texas.
It is really annoying. I wish I knew how to stop this.

956-428-3312 from a 800 Registry Co. I have a 877 toll free number through my company and I have received a few calls from this number. Whenever I have a call come in through this number and forwarded to my personal cell phone the system documents it and send it to me in an email.

Strange, the call log reads anywhere from 39 seconds to almost 2 minutes but on my phone is always reads that the call lasted 00:00 since I have never answered when they call.

My phone number is on the do not call list!

I have received two of these types of calls from 9564283312 on my toll free number, 1st one on 2011-05-03 and the second on 2011-05-23.  I have received calls with Caller ID of "800 REGISTRY CO" also well from the following numbers:

9564408918
9564283320
9564120249
9564120718
9564120531
9563654083

In all cases, there is nothing when the call is answered

hung up

Received call and nobody on the other line. Called number back and phone would not ring.

Received call to my 888 number from "800 REGISTRY CO" at 10:23PM Pacific Time on a Sunday evening.  Upon my pickup and greeting, heard no sound on the line, and caller hung up after a few seconds.