How to receive an SMS for Signal in three steps
Getting your Signal verification code through asms.ai is straightforward. You do not need an account, a download, or a credit card.
Step 1: Go to asms.ai and browse the list of available shared numbers. Filter by country if you want a US, UK, German, Georgian, or Ukrainian number. Click any number to open its public inbox and confirm it is active before proceeding.
Step 2: Open Signal on your phone or desktop. When prompted for a phone number during setup, enter the asms.ai number you chose. Select SMS as your delivery method and request the verification code.
Step 3: Refresh the asms.ai inbox page. The code typically arrives within 30 seconds. Copy it into Signal and your account creation is complete.
Because the inboxes are public, you do not need to log in anywhere. The number and its messages are visible to anyone who visits that page, which is exactly what makes them useful for quick one-time verifications, and why you should never use a shared number for anything sensitive beyond a throwaway account.
Is the service genuinely free?
Yes. Every number listed on the free tier of asms.ai costs nothing to use. There is no freemium bait-and-switch, no SMS credit balance, and no trial period that expires.
The free tier is sustained by users who need something more: a private number that only they can see, or programmatic access via the REST API and native MCP server for AI agents and automation workflows. Those paid tiers cover the server and number costs, so the shared public numbers stay free for everyone else.
You will never be asked for payment to read a message in a shared inbox. No account creation, no email address, no phone number of your own needed to use the service.
Why people use a temporary number for Signal verification
Signal requires a phone number to create an account, and that number becomes your permanent identity on the platform. Anyone who has it can message you, and changing it later means either migrating an existing account or starting fresh. That design choice has real consequences for anyone who values separation between their private contact details and their app identity.
People reach for a temporary, burner, or anonymous number for Signal for several reasons. Some are testing the app before committing a personal number to a new platform. Others want a separate Signal identity for a specific community or work project, kept apart from their main contact details. Journalists, researchers, and activists sometimes need a Signal account that cannot be traced back to a registered personal number. Some users live in regions where providing a real number to any third-party service carries genuine risk.
A shared disposable number from asms.ai handles all of these cases for a one-time verification. The number receives the code, you complete setup, and the inbox is periodically wiped so messages do not accumulate indefinitely. After that, the account belongs to you and your conversations are protected by Signal's end-to-end encryption regardless of how you registered.
Privacy and security: what you should know
Using a shared number for Signal verification does not compromise Signal's end-to-end encryption. Once your account is created, all messages you send are encrypted between you and your recipients regardless of how the account was registered. The registration method has no bearing on message security after the fact.
What you must understand is that the shared inbox is public. Every message sent to that number, including your verification code, is visible to any visitor on asms.ai. Do not use a shared number as your ongoing contact number. Use it to receive the one-time code, copy it promptly, and treat the number as done.
One practical consideration: Signal ties your account to the number you registered with. If you reinstall Signal and need a new verification code sent to the same number, the shared inbox would receive it, provided asms.ai still holds that number in the pool. If the number has since been retired, you would need to register with a fresh number. For users who want continuity and a private inbox, asms.ai private numbers are the appropriate choice.
Will Signal accept a shared number?
Signal accepts most mobile numbers that can receive an SMS. Shared virtual numbers from established providers generally work, and many asms.ai users receive Signal verification codes successfully every day.
Platforms do update their blocklists, and a number that worked last week may not work today. This applies to Signal as it does to any large service. If you try a number and Signal reports an error or the code does not arrive within about a minute, the most reliable fix is to return to asms.ai and pick a different number, preferably from a different country. US numbers are the most commonly attempted, so UK, German, Georgian, or Ukrainian numbers often have better availability at any given moment.
asms.ai does not guarantee that any specific number will work with any specific platform, because blocklists change outside our control. The pool is large and rotated regularly, so you usually have good alternatives within a few tries. If you consistently hit blocks across multiple numbers, a private number reduces that friction considerably because dedicated lines are far less likely to appear on shared virtual-number blocklists.
What else can you verify with a free number?
A shared asms.ai number can receive SMS verification codes from many platforms beyond Signal. Common uses include verifying a secondary account on WhatsApp, Telegram, or Discord; confirming a new Google, Apple, or Microsoft account; signing up for a service that requires a phone number once but will never need to contact you again; and running smoke tests of SMS flows during software development.
Developers and QA engineers use the free numbers to test end-to-end verification flows without consuming personal numbers or managing a physical SIM inventory. When testing volume is higher, the REST API and native MCP server allow automated receipt of SMS codes as part of a continuous integration pipeline, so each test run gets a fresh code without manual steps.
Not every platform accepts shared virtual numbers. Financial services, some social networks, and high-security platforms actively block virtual number ranges. For those cases, a private number from asms.ai provides a dedicated line that is far less likely to be flagged. The free tier is best suited to platforms that do a basic format check rather than a carrier-level lookup.
Number availability and coverage
asms.ai maintains a pool of shared online numbers across multiple countries, with new numbers added to the list daily. Current coverage includes numbers from the United States, United Kingdom, Germany, Georgia, and Ukraine. The mix reflects where demand is highest and where number supply is most reliable.
Numbers are periodically retired and replaced to keep inboxes fresh and to reduce the likelihood that any single number has accumulated a blocklist history. When you visit the number list, every entry is currently active. There are no dead numbers sitting in the directory.
Country availability changes over time as supply allows. If the country you need is not listed, check back in a day or two, or try a number from a different jurisdiction that the target platform is likely to accept. For use cases that require a consistent number in a specific country over weeks or months, private number subscriptions offer guaranteed allocation with a dedicated inbox that only you can access.