Ask HN: Is there something like a round trip “ping” for telephone?
Problem: The majority of the robo/spam calls I receive have a fake caller ID [1] so I can't block them based on originating location.
Question: Is there something analogous to internet network "ping" (but the the phone network) that could be used to determine approximately how far away the caller truly is? The idea would be to flag calls [2] that can't possibly be local yet have a "local" caller ID. Obviously, calls from cell phones can come from anywhere.
[1] Usually with the same 3 digits as mine i.e. (AAA) BBB-CCCC where AAA is area code, BBB is first 3 digits so they appear to be originating locally.
[2] Flagging might result in sending the call to voice mail or asking a question to test for human caller.
1 comment
[ 1247 ms ] story [ 53.1 ms ] threadI swear that one of these days I will get around to creating such a system based on twilio. I swear.