Question 1

How do temporary numbers work?

Accepted Answer

Choose an available number for a supported service, use it during verification, then watch for the incoming message in the activity view.

Question 2

How quickly do messages arrive?

Accepted Answer

Most supported routes deliver within a few seconds, though timing can vary by service and carrier.

Question 3

Do I need an account?

Accepted Answer

No account is required to explore the current public experience.

Question 4

What does limited availability mean?

Accepted Answer

Inventory exists, but fewer countries or routes are currently active for that service.

Question 5

Are message previews private?

Accepted Answer

Public activity displays verification codes in plain text so visitors can read and copy them directly.

Question 6

What is SMSX?

Accepted Answer

SMSX is a public SMS verification directory. It publishes temporary phone numbers together with the messages those numbers receive, so you can complete a sign-up code, test an onboarding flow, or check delivery for a service without exposing your personal mobile number.

Question 7

Do I need to create an account to use a number?

Accepted Answer

No. Every number in the directory is public and read-only. Open the Numbers page, pick an available number for the country and service you need, paste it into the site you are verifying, then refresh the number page to read the incoming code.

Question 8

How do I receive my first verification code?

Accepted Answer

Copy a number from its detail page, request a code from the service you are signing up to, then return to the SMSX number page and refresh. Messages usually appear within a few seconds and are listed newest first with the code highlighted.

Question 9

Is SMSX free to use?

Accepted Answer

Yes. Browsing numbers, reading public inboxes, and copying verification codes are free. There is no paid tier, credit balance, or hidden charge inside the public directory.

Question 10

Which countries are available?

Accepted Answer

Country coverage is shown live on the Numbers page and changes as inventory rotates. Use the country filter to see every region that currently has at least one online number, and check the flag and dialling code before you submit the number to a service.

Question 11

What is the difference between a number, a service, and a message?

Accepted Answer

A number is a physical line published in the directory. A service is the platform a number is commonly used with, such as a messenger or marketplace. A message is a single SMS that arrived on a number, including the sender, body, timestamp, and extracted code.

Question 12

Can I use SMSX on mobile?

Accepted Answer

Yes. The directory is responsive and the copy button works on touch devices, so you can hold a number page in one tab and the service you are verifying in another.

Question 13

How long does a code take to arrive?

Accepted Answer

Most codes land within 5 to 60 seconds of being requested. Delivery depends on the sending service and the carrier route, so allow up to two minutes before you request a second code.

Question 14

Why can I see messages that other people requested?

Accepted Answer

Every number on SMSX is shared and public by design. Any code sent to that line is visible to all visitors, which is exactly why these numbers must never be used for anything you consider private.

Question 15

Do message inboxes refresh automatically?

Accepted Answer

Number pages render the latest published activity when they load. If you are waiting on a code, refresh the page after requesting it rather than waiting on the current view.

Question 16

How long are messages kept?

Accepted Answer

Messages stay visible for a limited retention window and then rotate out as new activity arrives. Treat anything you see as temporary and copy the code immediately.

Question 17

My code arrived but the service says it expired. What happened?

Accepted Answer

Most verification codes expire in 60 to 300 seconds. Because a public inbox may already have older codes listed, always use the newest message for your attempt and request a fresh code if the timestamp is more than a couple of minutes old.

Question 18

There are several codes from the same service. Which one is mine?

Accepted Answer

Match the timestamp against the moment you pressed send. If two visitors request codes seconds apart it can be impossible to tell them apart, so request again and use the newest entry.

Question 19

Can I receive voice calls or OTP phone calls?

Accepted Answer

No. The directory publishes SMS activity only. Choose the SMS delivery option whenever a service offers both SMS and voice verification.

Question 20

Can I receive MMS, images, or files?

Accepted Answer

No. Only the text body of an SMS is published. Attachments, images, and multimedia payloads are discarded.

Question 21

Can I send an SMS from a listed number?

Accepted Answer

No. Numbers are receive-only. There is no outbound messaging, reply, or chat feature, so services that require you to text a keyword first will not work.

Question 22

What do the available, busy, and offline labels mean?

Accepted Answer

Available means the line is online and accepting traffic. Busy means it is receiving heavy verification volume and delivery may be slower. Offline means the number has been retired from rotation and will no longer receive messages.

Question 23

Why did a number disappear from the directory?

Accepted Answer

Numbers rotate. Lines are retired when a carrier reclaims them, when abuse is detected, or when a service blocks the range. Retired numbers are removed so you do not waste an attempt on a dead line.

Question 24

How often is inventory updated?

Accepted Answer

Inventory is reviewed continuously and the Numbers page always reflects the current published set. Success rate and last activity on each card tell you how recently a line actually delivered.

Question 25

What does the success rate on a number mean?

Accepted Answer

It is the share of recent verification attempts on that line that produced a delivered message. Higher percentages are a good proxy for reliability, but no shared number can guarantee delivery for a specific service.

Question 26

Can I reserve, rent, or buy a number for myself?

Accepted Answer

Not from the public directory. Every listed line is shared. If you need a private, dedicated number, use a commercial provider that issues numbers under your own account.

Question 27

How do I pick the best number for my sign-up?

Accepted Answer

Filter by the service first, then by country, then sort by success rate and recent activity. A line that delivered minutes ago for the same service is the strongest candidate.

Question 28

Do I include the country code when entering the number?

Accepted Answer

Yes. Submit the number in full international format, and let the service pick the country from the dialling code rather than typing a local prefix such as a leading zero.

Question 29

Why does a number show activity for services I did not request?

Accepted Answer

Shared lines receive traffic from everyone using them. Unrelated codes in the inbox are normal and do not mean the number is broken.

Question 30

Can I request a specific country or service?

Accepted Answer

Yes, send the request through the Contact page. Coverage requests help prioritise which countries and services get added to rotation next.

Question 31

Which services can I verify with a public number?

Accepted Answer

The Services page lists every platform with recent successful activity, along with how many numbers and countries currently support it. Anything not listed there has no verified recent delivery.

Question 32

Why did a major platform reject the number?

Accepted Answer

Large platforms maintain blocklists of ranges known to be used for shared or virtual verification. When a range is flagged, every number in it is rejected regardless of status in the directory.

Question 33

Can I use SMSX for banking, government, or medical accounts?

Accepted Answer

No. Never use a public number for financial, government, healthcare, or any identity-bound account. Anyone can read the inbox, which means anyone could complete a password reset on that account.

Question 34

Can I use a public number for two-factor authentication?

Accepted Answer

It is strongly discouraged. A shared number gives every visitor the ability to intercept your login codes. Use an authenticator app or a private number you control for any account you intend to keep.

Question 35

Is SMSX suitable for testing my own product?

Accepted Answer

Yes, this is one of the best uses. Developers and QA teams use published numbers to confirm that their own onboarding SMS, templates, and delivery routes work across countries.

Question 36

Can I re-verify the same account later with the same number?

Accepted Answer

Assume you cannot. The line may be offline by then and the inbox is public, so any account you create is effectively disposable and unrecoverable.

Question 37

Why does one number work for a service and another does not?

Accepted Answer

Routing, carrier reputation, and country restrictions differ per line. If one number fails, try another number for the same service, ideally in a different country.

Question 38

Can I use a number for WhatsApp, Telegram, or similar messengers?

Accepted Answer

Only if the Services page shows current activity for that platform. Messengers are aggressive about blocking shared ranges, so availability changes frequently and past success is not a guarantee.

Question 39

How do I know a service is still supported?

Accepted Answer

Open the service page and look at active numbers, country count, and success rate. A service with zero active numbers or a very low success rate is not currently usable.

Question 40

Is anything I do on SMSX private?

Accepted Answer

No message content is private. Every code delivered to a listed number is published to all visitors. Only use these numbers for throwaway, low-risk verifications.

Question 41

Does SMSX ask for personal information?

Accepted Answer

The public directory requires no sign-up, no phone number of your own, and no payment details. The only place you submit information is the contact form, and only what you type there.

Question 42

Are messages containing personal data removed?

Accepted Answer

Published messages are subject to a retention window and rotate out over time. If a message exposes personal data, report it through the Contact page and reference the number and timestamp so it can be removed.

Question 43

Can someone take over an account I created with a public number?

Accepted Answer

Yes. Anyone who can read the inbox can trigger and read a password reset code. That is the single most important reason to avoid public numbers for accounts you care about.

Question 44

Should I use a public number for a password reset?

Accepted Answer

No. If your account already relies on a private number for recovery, keep it that way and never move recovery to a shared line.

Question 45

Does SMSX use cookies or tracking?

Accepted Answer

The site uses only what is needed to serve pages, remember your theme preference, and measure aggregate usage. Details are described in the Privacy Policy.

Question 46

How can I protect myself while still using a temporary number?

Accepted Answer

Use a unique password, never link a payment method, never store documents or personal data in the account, and assume anything sent to that number is readable by strangers.

Question 47

No message arrived at all. What should I check?

Accepted Answer

Confirm you copied the number in full international format, confirm the service accepted the submission without a validation error, wait up to two minutes, refresh the number page, and then try a different number if the inbox is still empty.

Question 48

The service says the number is invalid. Why?

Accepted Answer

Either a formatting problem such as an extra zero or a missing plus sign, or the range is blocked by that service. Re-copy the number with the copy button and, if it still fails, pick a line in another country.

Question 49

The service says the number is already in use.

Accepted Answer

Someone has already registered that platform with the line. Choose a different number, since shared lines are frequently reused for popular services.

Question 50

I hit a rate limit and cannot request another code.

Accepted Answer

Rate limits are enforced by the service, not by SMSX. Wait for the cooldown the service states, then request once more instead of repeatedly retrying.

Question 51

Copying the number did not work on my device.

Accepted Answer

Some browsers block clipboard access in restricted contexts. Select the digits manually and copy them, or open the number page in a standard browser tab rather than an in-app webview.

Question 52

The page looks broken or the list is empty.

Accepted Answer

Reload with a hard refresh to clear a stale cached page. If the list is still empty, inventory may be mid-rotation, so check back shortly.

Question 53

A code is visible but incomplete or cut off.

Accepted Answer

Long messages can be truncated by the sender or the carrier. Request a new code and read the newest entry, which usually arrives in a cleaner format.

Question 54

How do I report a number that never delivers?

Accepted Answer

Use the Contact page with the number, the service you tried, and the approximate time. Reports like this are how failing lines get pulled from rotation.

Question 55

Is there a public API?

Accepted Answer

There is no public data API for the directory today. If you need programmatic access for testing, describe your use case through the Contact page.

Question 56

Can I scrape the number and message pages?

Accepted Answer

Automated bulk scraping is not permitted and may be rate limited or blocked. The pages are built for human browsing and for reasonable manual testing.

Question 57

Can I use SMSX in an automated test suite?

Accepted Answer

Because numbers rotate and inboxes are shared, a public directory is not a stable test fixture. Use it for exploratory checks and use a provider with dedicated numbers for CI.

Question 58

Is there structured data or an RSS feed?

Accepted Answer

Pages ship schema.org structured data for search engines, and the blog publishes an RSS feed. Both are intended for indexing rather than for data extraction.

Question 59

Do you support webhooks for incoming messages?

Accepted Answer

No. Delivery notifications are not available for public numbers, so you need to refresh the number page to see new activity.

Question 60

Can I embed a number or inbox in my own site?

Accepted Answer

There is no official embed. You may link to a number, service, or country page instead of framing the content.

Question 61

Is using a temporary number legal?

Accepted Answer

Receiving a verification code on a public number is lawful in most places, but using it to break a platform's terms, impersonate someone, evade a ban, or commit fraud is not. You are responsible for how you use the numbers.

Question 62

What is prohibited on SMSX?

Accepted Answer

Fraud, harassment, spam, mass or automated account creation, ban evasion, and any attempt to access an account that is not yours. Accounts of abusive traffic sources are cut off and the numbers involved are retired.

Question 63

Can I ask for a number or message to be removed?

Accepted Answer

Yes. Send the number and timestamp through the Contact page. Legitimate removal requests, especially those involving exposed personal data, are actioned.

Question 64

Do you guarantee delivery or uptime?

Accepted Answer

No. The directory is provided as is. Shared numbers, carrier routing, and platform blocklists mean delivery can never be guaranteed for a specific service.

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