Yes, there are options for temporary phone numbers. Here are a few steps to consider:

1.Research Apps: Look into apps like Hushed, Burner, or Google Voice. They offer temporary numbers for various needs. 2.Check Features: Some apps let you choose how long you keep the number. Others may have limits on calls or texts. 3.Consider Costs: Many services charge a monthly fee. Compare prices and features to find the best fit for you. 4.Read Reviews: Look for user reviews to see how well the service works in real life. This can help you avoid problems. 5.Privacy Policy: Make sure to read the privacy policy. Understand how your data and phone number will be used. Using a temporary number can help protect your privacy. Just remember that some services may still require a real number for verification. If you want more details, I wrote about this here. Feedback is welcome!

In the US, you can approximate this with a cheap prepaid service like a Tracfone.

Don't get it? Can you explain further ?

For about $20, you can buy a phone that comes with 10 minutes of talk time and has its own phone number. You can use that as a temp number. If you don't buy more time for that phone, the number will go away and you can then buy time for it and get a different number.

Or, what I do, is just keep it loaded with a minimal amount of minutes and use the same number for all such registration purposes.

I started doing this when I needed a whatsapp account, but didn't want to give facebook my phone number. I just keep that phone number alive, but never use it for anything else, and never even turn the phone on.

Sometimes won't work, especially larger sites.

I used to run a service that was using Twilio to do exactly what OP is asking. These sites often flag and block all phone numbers that are virtual or prepaid.

I've been doing this for about a decade and have never encountered that problem personally. Not saying that it doesn't happen, but it's uncommon enough for at least me to never come across it.

There are apps like Hushed where you can generate a working phone number for a pre-determined period of time.

I use google voice, and in the past other virtual phone numbers but many services don’t fully work. When you request a code, you never receive it and in some cases they tell you they don’t accept the virtual number.

There are lots of them: https://quackr.io/ https://receive-smss.com/ https://sms24.me/ https://temp-number.com/ https://onlinesim.io/

I've always wondered what it would take to be my own telephone company and get an entire prefix, so I can give out unique phone numbers, kinda like how's privacy.com does for credit cards.

I've been thinking through possible next steps for telephony as PSTN dies its slow death under spam.

Controlling a VOIP system, in which callers are challenged in different ways, is one approach. One potential challenge would be to issue random, non-sequential, and sparsely populated "extension" numbers, of say 10--20 digits (10 billion -- 100 quintillion values).

You'd offer a distinct value to each individual contact. Those contacts would be permitted to contact only that "extension". This creates a 1:1 pairing of caller to permitted contact number.

Coordinating generation and acceptance is probably the most challenging piece of this. Callers who might attempt contacts from multiple number is another.

(Which itself suggests assigning an extention to a set or range of numbers, e.g., a healthcare network, school or university system, or large business / organisation with which you engage frequently.)

Friends-and-family would have an easier challenge (whitelisted numbers, some in- or out-of-band validation, or simply being requested to enter the last four digits of their own number (robocall spoofs would probably fail that for at least some time.

Effectively, your single public "published" number serves as a gateway to your own telephony network, into which you can establish both valid numbers, restrictions on same, and challenges, as you see fit.

For humans you want to be able to call you, and you are in control of the PBX receiving the call, and the contact card you are giving them, you can give each person a custom extension, and then preprogram that extension into the contact card/phone number you give them, using a comma to add a delay.

Yes, exactly, and I'm aware of that. Your comment should be helpful to others and is appreciated on that count.

The numbers would quickly be blacklisted by websites. You need a very large pool of numbers and make sure you don't reuse numbers too often. Not sure if it's practical.

They exist. Services treat control of the number as equivalent to control of the account, and expect you to maintain that control.

Throwaway phone numbers are not a viable low cost or no cost alternative in most normal user signup scenarios, and they're implemented as a privacy invasive form of spam prevention for that exact reason.