Our online random fax number provides a quick and easy online visual confirmation for testing your fax machine’s functionality. By using our service, you can quickly verify if your device is set up correctly and ready to send and receive faxes without having to rely on friends, business clients, or relatives as test recipients.

Need to quickly run a fax test? We’ve got you covered. The fax tester offers numbers in the US and the UK for you to test with. Send a fax to one of these numbers, and it will appear on this page below within seconds.

🇺🇸 US test fax number🇬🇧 UK test fax number
If dialed locally1 (929) 207-0142(020) 380-89435
If dialed internationally
+19292070142
(click to copy)
+442038089435
(click to copy)
🇺🇸 US test fax number
1 (929) 207-0142
+19292070142
🇬🇧 UK test fax number
(020) 3808 9435
+442038089435

Random fax numbers are similar to arbitrary fax numbers but intentionally generated for one-time use or testing purposes. Our service provides free fax numbers specifically designed to receive a fax and help you quickly validate your fax machine or printer. By sending a fax to this number, you can confidently assess your device’s performance.

By sending a test fax to our random number, you can obtain visual feedback on your fax machine’s performance. This convenient solution enables you to test your fax machine without involving friends, family, or business associates, ensuring a hassle-free testing experience.

A Fun Idea: Our random fax number can also be used as a playful outlet for trying out new fonts or doodles. Why not send a test fax showcasing your artistic side with unique typography, designs, or even a comic strip? You’ll have a good time while also testing your fax machine’s performance.

Not really.

While technically you could dial any random number from a fax machine, it would not necessarily provide a useful test of the machine’s functionality. This is because not every telephone line is equipped to receive faxes.

When testing a fax machine, you need to send a fax to a known, working fax machine on the other end. Simply dialing a random number won’t give you any valid indication about whether your fax machine is working correctly, since the random number might not be connected to a fax machine at all. Therefore, to test a fax machine, it is best to send a fax to a confirmed fax number, such as the numbers on this page, where you can verify the transmission was successful.

If you’re receiving faxes from random numbers, there could be several reasons:

  1. Wrong Number: It’s possible that the sender has made a mistake while dialing or entering the fax number, leading to you receiving a fax intended for someone else.
  2. Outdated Information: If your fax number used to belong to another individual or business, you might still receive faxes intended for the previous owner.
  3. Spam: Just like email, faxes can be used for spam. Unsolicited faxes could be sent randomly or to large lists of numbers, and could contain advertisements, scams, or phishing attempts.
  4. Fax Blasting: Some businesses use a technique called “fax blasting,” where they send out mass faxes to multiple recipients. Some businesses employ this tactic, where they generate or acquire lists of random fax numbers and send out mass advertisements or promotional material. This approach is akin to a scattergun approach, hoping to reach potential clients or customers, despite being viewed as outdated and often intrusive.
  5. Malfunctioning Fax Machine: It could also be possible that a malfunctioning or incorrectly programmed fax machine is sending out faxes to random numbers.

How to test your fax machine on a random number

  • 1. Create a random document for sending

    Draft a one-page or multiple-page black & white sample fax. It doesn’t matter what the fax contains, so let your imagination run wild. You can opt for a blank page, but remember that won’t offer insights into orientation and resolution.

  • 2. Send the test fax

    Fax your document to +19292070142 or +442038089435 from the fax machine or all-in-one printer you want to test. You can send it from any location globally, even though these numbers are based in the US and the UK, respectively.

  • 3. Wait for the fax to be received

    Once you’ve sent the fax, give it a minute or two, then refresh this ‘Random fax number’ page. Once it’s received, it will appear below. Our system takes this time to prepare your fax for viewing.

  • 4. Examine your received fax

    When your fax shows up on the page, examine it. Take note of the orientation, quality, masked sender number and your own sender ID.

  • 5. Troubleshooting

    If you don’t see your fax after a few minutes, despite refreshing, go over your fax settings to make sure everything is set up right. After doing so, give it another shot.

Privacy note: Any fax sent to the random fax number service remains publicly visible for 30 days, after which it is automatically deleted. If you need us to remove a fax sooner, contact us.

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