971-451-3310

Suspected spam or robo caller: rings twice, then hangs up. Does not leave voicemail and has no caller identification.  Likely calling to see if line is active if someone picks up.

DO NOT ANSWER CALLS FROM THIS NUMBER!  - This number is owned by Company Name: ONVOY, LLC  OREGON FOREIGN LIMITED-LIABILITY COMPANY /// File Number: 1013391-90 /// Filing State: Oregon (OR) /// Domestic State: Minnesota (MN) spacer 1 N Wacker Dr Suite 2500 Chicago, IL 60606 /// A reviewer for this company says:  "Telecommunications company has been reported to the Public Utility Commission of TX, the FBI, FTC, FCC ... landline # CLAIMS to be in Portland Oregon but has VIOLATED the Federal DO NOT CALL list for which we intend to take legal action."

Well done, you found out what company provides service for this number.
Unfortunately, you found out nothing about who actually made the call or why they called you.
Onvoy is a telecommunications service provider (like AT&T, Verizon, T-Mobile, etc.), among the services they provide, they rent out phone numbers to subscribers so that they can make and receive phone calls (just like how you rent your phone number from your service provider).  They did not make the phone call you received, they simply did what they are required by FCC regulations to do, which is connect the call from the caller to your service provider, which in turn is required to connect the call to you.
Of course, if this number was spoofed, then Onvoy most likely had no connection to the call you received at all, since the caller was probably using an entirely different service provider.