Free non-VoIP numbers: why public inboxes fail
"Free non-VoIP number" is one of the most searched variants. Here is what those free numbers are and why they rarely work.
How do free SMS websites work?
A free site publishes a handful of numbers and shows every SMS they receive on a public page. The numbers stay online for weeks, receive codes from hundreds of services and are listed on many similar sites.
What goes wrong with a free number?
- Anyone can read your code. The inbox is public, so the code that opens your account is visible to every visitor.
- Services have seen the number before. Google says it limits how many accounts and verifications one number can serve; a number used by thousands of strangers hits those limits first.
- You cannot recover the account. When a service asks for a new code later, the number may be gone or in someone else's hands.
- Many free numbers are VoIP. Free sites often use cheap internet numbers, which services that require mobile refuse.
What do services say about reused numbers?
| Service | Rule on its help pages |
|---|---|
| "we limit the number of accounts each phone number can create" and "the number of times a phone number can be used for verification" | |
| Apple | "You can't use a phone number that's already in use by another Apple Account." |
| Telegram | "Each phone number is a separate account on Telegram." |
| OpenAI | A phone number can be used for verification up to 3 times |
| Discord | A number already linked to another Discord account cannot be added again |
Read on 2026-10-18; Google, Apple and Telegram are exact quotes, OpenAI and Discord are paraphrased from their help centres.
A public number has usually reached those limits long before you try it, which is why sign-up forms reject it with messages such as "This phone number cannot be used for verification".
What does a private number cost instead?
| Provider | US Google code | US WhatsApp code |
|---|---|---|
| Tiger SMS | $0.08 | $0.30 |
| Tell A Bot | $0.40 | $1.49 |
| TextVerified | $0.75 | $1.50 |
| RealSIM Numbers | $0.36 | $1.12 |
Public list prices read on 2026-10-18; more providers in the price index.
What should I use instead?
A private number that only you can read: a second SIM, or a single-use non-VoIP number whose SMS appears only in your account. Here a US Google code costs $0.36, a Telegram code $0.56 and a WhatsApp code $1.12, and you pay nothing if no code arrives.
Get a private number
From $0.36; codes visible only to you.
Frequently asked questions
Is there a free trial?
No. The minimum is a $20 top-up, after which a code costs from $0.36; numbers that receive nothing are not charged.
What happens if no code arrives?
If no SMS arrives before the window ends, or the service refuses the number, cancel the order: the price goes back to your balance as credit. You are not charged for a number that received no code.
Sources
- Google Help: verify your account (checked 2026-10-18)
- Apple Support: Apple Account phone number (checked 2026-10-18)
- Telegram FAQ (checked 2026-10-18)
- OpenAI Help: phone verification (checked 2026-10-18)
- Discord Support: Verification Required FAQ (checked 2026-10-18)
- Tiger SMS: US prices (checked 2026-10-18)
- Tell A Bot: prices (checked 2026-10-18)
- TextVerified: WhatsApp service page (checked 2026-10-18)