202-031-0044

Didn't answer and left no message.

Called and hung up on the answering machine.
Area code 202 is in Washington DC. But caller ID just says "name not found".

An hour later another call from a different DC phone number:  202-061-4141. Hung up on the answering machine, no caller ID info.
Coincidence? I don't think so.

Me too. I'm never planning on answering.

Getting these calls multiple times. Changes phone number each time.

getting multiple calls and hang ups..some are different numbers but area code is 202

Seeing this too in Indiana, 202 area code with multiple numbers, leaves no message, Name Not Found on caller ID.  I am blocking all of them like this.  Thanks to all for reporting.

Receiving multiple calls today from 202-031-0044! Recieved calls from Franklin research "202-681-5948 past few weeks. No reply if answered.  Unreachable number when call is returned. Ima charter customer with home phone.  Is charter the common thread?

Two possibilities :
One of several legitimate companies that have the two words "Franklin Research" in their business name. Google those two words; there are lots of them !!

A scammer operation calling itself "Ben Franklin Research" that lies to people about having federal grants for them. The claim to be doing research is really a setup and a phishing operation. As the 202 area code is often spoofed by scammers pretending to be IRS agents, I think the scammers might have called you. See the reports on this toll-free area code thread :
https://800notes.com/Phone.aspx/1-888-767-9082

Most likely Indian or Pakistani grant/loan/IRS/tech scammers.  THey prefer to use area code 202 to make you think that they are calling from Washington DC.  Ignore and block the calls.