Called our landline, but didn't leave a message.  About 15 minutes later, someone called our phone using 203-983-5988.  They didn't leave a message then either.  But, the area code 203 number is a well known credit card zero interest rate scam.  They both are likely the same worthless, POS scum scammers.  I hope they rot in hell.

Robot blocker blocked it after one ring

Had prefix numbers of 11 before the normal 817 number, so it came up as "Invalid number". They hung up after 3 rings so recorder wouldn't kick on. Putting on my naughty list.

3 rings and hung up.

Called no message left