Block this as well as any other fake numbers that rings you, and there's no need to feel uneasy. If it makes you feel better, report this number to the police.
why do you people even answer the phone? You're paying about $10/mo for ID, right? If I get a call from a number that I don't know...4 rings and it goes to the machine because I'm not lonely. punch in the numbers of your friends relatives and don't answer any others. Simple, no? I'm on the DNC list also, what a worthless law, I'm not going to bother renewing anymore...just STOP answering the phone. geeze.
Every couple three days, I get calls from this 202-810-0581 number. Whenever I do, I open to it but don't say anything. For ten seconds while the line is still open I wait for the caller to say something. They never say anything within that time frame, then I hang up.
With other unknown calls, which I've done that shakes their tree, I answer the call in a strong directing voice with these first words only, "What are you selling?" And wait for them to answer, They are programmed in their speech to start off getting me to like them first before they start selling their product. By my introduction, they turn into defensive mode and don't know how to respond. Regardless as to what takes place, I say nothing more and hangup. Try this method sometime, its fun!