You can if you have an Androide cell phone. The App is called "tcallBlocking". There is a free version in which you can block up to 3 ph. numbers and then a full version that costs $2.00, allowing you to block unlimited numbers. I just bought the full version to use the wild card. By using the wildcard, you can block an entire area code by entering <206*>.
I have been getting the same calls from various different "206" area code numbers, so I found this App and it has been working for me.
Missed a call from this number, called back and received an automated message: "This number is temporarily out of service." It was 5 minutes after receiving the call, so I don't know why a number would become out of service so quickly. Sounds like another scam to me.
Just received call from the number 206-469-0957. No message left by the caller. When I dialed it back there was an automated message: "the number you have called is temporarily unavailable. Please try your call again later". The voice recording on the automated greeting was done by a person outside the US - accent that was plainly evident. This definitely appears to be a scam-related call.
Received a call on my cell from them @ 11:11 am this morning. When I answered, they hung up. They have been told time and again to not call my cell phone. They do not listen. Yes, they do have different numbers they call from. Really is annoying!!