Guides
Why codes don't arrive, and what to do about it
Sourced guides about phone numbers and verification codes. They're written for people who aren't buying anything today, and they say when Cleat is the wrong answer.
Guide · Line types
What is a non-VoIP number, and why won't some services text one?
How services look up a number's line type before they send a code, why VoIP numbers get refused, and your options, including the ones that aren't Cleat.
Read →Guide · Google Voice
Does Google Voice work for verification codes and bank 2FA?
Why some banks and apps won't send codes to Google Voice, the reclaim and availability rules Google adds, and every option you have.
Read →Guide · From abroad
How to get a US phone number when you're not in the US
The five real routes, what each one needs, and which of them receive codes from services that refuse internet numbers.
Read →Guide · checked September 2026
What each service actually publishes about VoIP numbers and verification codes
Five companies publish an explicit rule against VoIP numbers. Several more are quoted as if they had, and haven't. Two large banks publish nothing at all. This page collects what each one actually says, quoted and dated, and says plainly where we could not check.
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