• Pasta Dental
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      fedilink
      99 months ago

      Which is also why most services that use phone number for user verification ban VoIP numbers, making this basically useless

      • @Cinner@lemmy.worldB
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        fedilink
        7
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        9 months ago

        To OP: it does add significant block to spammers so they may only create 5,000 accounts slowly instead of millions of accounts quickly.

        Most email services require a phone number or other email service to sign up if there is anything fishy about your connection/browser, and there can be hundreds of things, even just some specific browser extension installed, or you using the same mobile network IP as a spammer.

        And there are services where you can buy a real temporary 4G/5G number (non-VoIP) for a service for less than a dollar per use. Once a number has been used for that service it still has every other X number (thousands) of services it can be used for before it’s retired from the pool. But that does add up after a while if you’re making tens or hundreds of thousands of accounts.