Underdog SMS Verification with a US Number
Fantasy sports platforms use the phone number to enforce one account per person, so any number that has already been registered — or that comes from a public pool — is refused.
icksms provides a clean carrier line with a real SIM behind it. The verification SMS arrives in your SMS center, and the number stays yours for as long as you keep the tier.
Codes usually arrive in under a minute and sync automatically to your SMS center.
Open the market Contact supportWhat you get
- Non-VoIP US carrier prefix, accepted at signup.
- Private inbox — no shared public page.
- Tiers of 2-9, 10-20 and 21-30 days, renewable.
- Codes kept in history for the whole rental.
- Batch ordering, txt export and API access.
- Support on Telegram if a code does not arrive.
How it works
- Create an account — an email address is enough, no ID needed.
- Top up your balance with USDT, Alipay or WeChat (recharge cards work too).
- Open the market, pick the project and a day tier (2-10, 11-20 or 21-30 days).
- Paste the number into the platform's verification field and wait for the code.
- Read the code in your SMS center, or open the number's public SMS link.
Live prices
| Project | Tier | Price | Stock |
|---|---|---|---|
| OpenAI/ChatGPT | 2-10 days | 0.20 USD | 54,617 |
| Claude | 2-4 days | 0.15 USD | 132,805 |
| Google Voice | 2-10 days | 0.15 USD | 99,975 |
| TikTok | 2-4 days | 0.075 USD | 144,353 |
| 2-9 days | 0.09 USD | 141,385 | |
| Wise | 2-4 days | 0.30 USD | 145,275 |
Prices and stock refresh from the live market every day.
FAQ
Why did my number get refused?
It was either VoIP or already used on another Underdog account. A fresh carrier line passes.
Can I change the number later?
Yes, in account settings — the new number receives a code when you save it.
How long do I need the number?
As long as the account is active and you expect device changes; 21-30 days with renewal for regular use.
Does the app need a matching region?
It helps: number, IP and store region should be consistent.