Discord Phone Verification Not Working: VoIP, “Already in Use” and Rate Limits

Discord doesn't ask everyone for a phone number. It asks when a server's verification level requires a verified phone, or when its systems flag an account and want extra assurance before letting it continue. That moment usually arrives when you're trying to join a community or regain access, so an error at that point is annoying. The good news is that Discord's phone errors are fairly predictable. This guide explains the common messages, what each one means, and how to get your own account verified without making the problem worse.

When does Discord ask for a phone number?

Server owners can set a verification level, and the highest level requires members to have a verified phone number on their Discord account before they can chat. Discord may also require phone verification on its own if an account looks suspicious, for example after unusual sign-ups, logins from new locations, or behavior that resembles spam.

Discord also lets you use your phone number for login and for SMS-based two-factor backup. Those are separate from the verification prompt, but they all rely on the same number on your account, which is why the number you choose matters.

Why does Discord reject my number?

Discord checks numbers against line-type data and may refuse VoIP numbers, including many app-based numbers from Google Voice, TextNow and similar burner apps. The error wording varies, but if a correctly formatted number is refused immediately, the line type is the likely reason.

Formatting is the other cause. Choose the country code from the dropdown and enter the national number without a leading 0 or an extra 1. For UK numbers, 07700 900123 becomes 7700 900123 after selecting +44.

What does “number already in use” mean?

Discord generally lets a phone number be verified on only one account at a time. If you previously verified the number on another account, including an old one you forgot about, Discord won't attach it to a second account. Log in to the old account, go to User Settings, then My Account, and remove the phone number. Then try again on the account you want to use.

If you can't access the old account, you'll need to recover it through Discord's login help or use a different number you control. Discord support can review some cases, but response times vary.

Step by step

1. Check the formatPick the country code and enter the number without a leading 0 or duplicate 1.
2. Free the number if it's in useRemove it from any other Discord account in User Settings > My Account.
3. Use a mobile numberSwap a VoIP number for a carrier mobile number.
4. Wait out rate limitsIf you're rate limited, stop and return later to try once.
5. Secure the accountAdd an authenticator app and save backup codes after verifying.

How do rate limits work?

Requesting codes repeatedly, entering wrong codes or trying many numbers quickly can trigger a message that you're being rate limited. The wait isn't always shown, and retrying during it can extend it. Close the verification prompt, wait at least several minutes, longer if you've made many attempts, and come back to try once.

• Don't refresh or reopen the prompt repeatedly.
• Avoid switching between many numbers in quick succession.
• Turn off VPNs and proxies, which can add risk signals.
• Make sure your email address is verified too.

Using a temporary number for Discord

If you don't want to link your personal number, a Noir SMS number can work for the verification step. These are carrier mobile numbers rather than VoIP lines, so they usually pass where VoIP numbers are refused, though Discord can still reject any number. Choose Discord as the service, enter the number and the code appears in your dashboard with a sound alert. If Discord refuses the number or no code arrives, cancel after two minutes for an instant refund, or wait for the automatic refund after 20 minutes.

Remember that the number is reserved only briefly and will be recycled. Don't rely on it for SMS login or SMS backup codes. Instead, set up two-factor authentication with an authenticator app, save your backup codes and keep your email verified. Use temporary numbers only for your own account; evading server bans or Discord bans with new numbers breaks Discord's rules and Noir SMS's acceptable use policy.