Panasonic model KX-TG6481 cordless phone allows you to block 500 numbers. This is the only phone I could find (after exhausting research) that allows you to completely block the ringing for blocked numbers. I bought the model with 3 extensions and it has changed my life. I was getting 2 or 3 spam calls a day and now it's down to about 1 per month. The Do Not Call registry is but a money making operation for the feds. They never put anyone out of business. They fine the offenders an insignificant amount that they are quite willing to pay. The feds do this hundreds or thousands of times a day and generate a pretty good income. if they put the spammers out of business. the feds income would dry up. Where do you think the spammers get your number from? The feds send them a list of "do not call' numbers and they of course resell the list or open under a different name with a list of hundreds of thousands of numbers to call.
Apparently another sketchy "Veterans Charity" solicitor. We have been receiving a rash of calls from this organization which I believe to be National Vietnam Veterans Foundation, Inc. D/B/A American Veterans Support Foundation (J. Thomas Burch Jr., President). They call from dozens of telephone numbers in the following area codes: 202, 240, 301, 443, 571, and 650. These calls do originate domestically, but they hide behind the cloak of a 501(c)3 organization so they are exempt from the National Do Not Call List. All we can do is block the telephone numbers, and that is why they are utilizing a wide variety of ever-changing numbers.