Neighbor spoofing

Someone is using my number to call anyone starting with the same area code + 3 first digits. So that's a pool of about 10000 numbers. They dial and hang up. I get about 20-50 calls per day asking me why I called or telling me to stop $%^& calling.

Besides changing the number, is there any other way to relieve this stress?
And what's the purpose... a prank?

(Free Ooma number so I don't want to give it up. Oh hey... maybe it's Ooma trying to convince me to switch to something else?).

"I did not call you, a scammer using fake caller id made a robo call to you that appeared to be from this number if you'd like to complain to someone about the call you received, please write your senator"

Robocallers like car warranty scammers just pick random numbers to use for the outgoing caller id to make their scam calls. In theory it's getting a little harder with shaken/stir but not much.

I'd suggest keeping your number, enough things try to use phone numbers as authentication tokens I'm not sure you should ever really willingly give up a phone number these days. you can always 'park' a DID for about $1/mo

As for what you can do about it, it will most likely blow over in a few days, possibly a bit longer. Call in to your voicemail (even if you use visual voicemail normally), and poke around the greeting menu until you find the option to set up an "extended absence greeting" that says something like

anyone who calls you will get this message before your normal greeting followed by a message prompting "if you'd still like to leave a message please press 1".

If you're having trouble setting up an extended absence greeting google 'your cell phone carrier extended absence greeting'

EDIT: sorry re-read your post, it's ooma not a cell number. in that case your best option is probably just to replace your regular voicemail greeting temporarily eg. "I most likely did not call you, a scammer using fake caller id made a robo call to you that appeared to be from this number if you'd like to complain to someone about the call you received, please write your senator if you'd still like to leave a message for Wasser please do so after the beep"

As for them dialing an hanging up, the robo caller is most likely trying to ID numbers that are in service or listen for someone to say hello and transfer to a helpful scammer in india. Their systems don't always work very well. Even legit robo calls like appt reminders sometimes require saying hello loudly several times before the message plays. Sometimes I just answer the phone "hell, hell, you're going to hell" or launch into my own fake scam pitch once I've decided it's a scammer.

you can set ooma up to only allow calls from your contacts

https://support.ooma.com/home/known-spammer-call-blocking/

Just sign up for a month or two they usually change spoof numbers as people block them or they get on spam lists.

I do hope they change at some point but there are 10000 numbers with that prefix so it could be a while. Waiting for myself to call me.

It's less funny than you think. On some phone systems if it's set up to bypass the pin when you call your voicemail, spoofed caller id is all that's required for someone to play your voicemail messages.

It's been over a month now, no end in sight.