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Not sure if this is the place for the question, but...

I did receive spam sms from a number, about a promotion here in Brazil. And, from this same number (27900), I did receive my Evernote verification code.

Now I wonder, is there some 'free for use', or rentable, sms numbers for anyone to send anything?

closed as off-topic by DavidPostill, fixer1234, Deltik, RedGrittyBrick, Ben N May 27 '16 at 22:30

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "This question is not about computer hardware or software, within the scope defined in the help center." – fixer1234, Deltik, RedGrittyBrick, Ben N
If this question can be reworded to fit the rules in the help center, please edit the question.

  • Sorry, questions about mobile phones and related infrastructure are off-topic at Super User. Maybe ask Evernote support what's going on? – Ben N May 27 '16 at 22:30
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Not quite "free for use". But, there are companies such as Twilio which specialize in providing APIs for sending SMS messages, so that individual web apps won't need to make agreements with dozens of telephone operators anymore.

Such services will usually route all messages (even from different customers) sent towards the same regio through the same phone number. For example, I live in Central Europe and various services – Tumblr, Blizzard, eBay, Namecheap – send me security codes via +44.7781470659. (According to the web, even Google and Microsoft use the same gateway.)

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