What Is a Fax Number and Do You Need One?

iEditorial Note: These blog posts represent the opinion of DoNotPay’s Writers, but each person’s situation and circumstances vary greatly. As a result, you should make sure to do your own independent research. Because everyone is unique, our self-help tools are never guaranteed to help with any specific situation. DoNotPay is not a law firm and is not licensed to practice law. DoNotPay provides a platform for legal information and self-help.

What Is a Fax Number, How To Use It, and the Easiest Way to Fax Online

If you need to send classified legal or medical files, you shouldn’t resort to email. Faxing is the way to go—it provides the necessary security measures by encrypting the document during the transfer.

Faxing requires the use of a fax number. “What is a fax number?” you may ask. DoNotPay will answer that and many other faxing questions in this article!

Fax Number Definition

A fax number is a number used to contact a fax machine, a fax server, or an online fax provider. It looks like a regular telephone number. The only difference is that when you dial a fax number, a fax tone answers.

Fax numbers are assigned by a phone company or an online fax provider to ensure faxes will reach their destination.

Fax numbers are defined according to:

  • Format
  • Number of digits

How Long Is a Fax Number?

The length of a fax number varies based on:

  1. The location of the recipient—you can send faxes locally or internationally
  2. The country—different countries have different phone number length, and the same goes for fax numbers

For faxing outside of your local area, you will need to add a country and an area code at the beginning of your fax number. The country code for the U.S. is the number 1. The area code typically has three digits. After entering the country and area code, respectively, the fax number follows. The fax number for the U.S. consists of seven digits, typically in groups of three and four.

If you are faxing to another country, a fax number will be even longer. The additional digits are called the exit codes and are there to ensure the number reaches the international switchboard. The exit codes vary based on the sender’s and receiver’s country. The U.S. exit code is 011.

You need to make sure all the requirements are met before sending the fax to a specific location. After adding the required codes, the fax number can expand to over ten digits, depending on its destination.

What Is a Standard Fax Number Format?

Fax numbers have a standard format, depending on whether you are sending faxes locally or internationally. Take a look at the table below to see typical fax number formats:

Fax Number Formats
Faxing locallyCountry codeFax number//
Faxing outside the local areasCountry codeArea codeFax Number
Faxing internationallyExit codeCountry codeArea codeFax Number

How To Use Fax Numbers To Send Faxes

Fax numbers are necessary for faxing via fax machines or online faxing apps and services. Here is an overview of using a fax number via different faxing methods:

Fax Number Use

Fax machinesOnline faxing servicesEmail faxing
  • Turn on the fax machine
  • Place the documents face-up in the feeder tray
  • Dial the fax number just like you would do if you were using a phone (don’t forget to add the required codes)
  • Hit Send
  • Access the online service or app
  • Upload the document you wish to send
  • Type in the message in the subject field
  • Enter the online fax number in the To field. Check if you need to type in numbers without any additional signs—dashes, pluses, parentheses, etc. If you are sending a fax internationally, you may need to type in 011 rather than +11
  • Click Send
  • Register your email via an online faxing service
  • Create a new email
  • Attach the files you want to fax
  • Enter the fax number followed by the online service provider’s extension in the To field
  • Click Send

Faxing Is Effortless With DoNotPay

DoNotPay is your best option for sending faxes anywhere! We will make sure your faxes are transferred to the receiver in record time, locally or internationally.

By opening DoNotPay in your , you will be able to use our Fax feature for:

  • Snapping and faxing any photo, including those of your checks and bills
  • Uploading and faxing files easily
  • Sending documents using any device—including PC, Mac, iPhone, or Android
  • Faxing as many as 100 pages a month

Our services come with some additional perks. We are aware of how sensitive legal documents can be. By using our app, you will not only ensure the secure transfer of confidential files but also save time!

DoNotPay’s Fax feature integrates with the Legal Documents feature and allows you to create, e-sign, and send a contract from one place!

How To Send a Fax Using DoNotPay

DoNotPay will show you how to fax with zero effort! You only need to:

  1. Access our app from a
  2. Enter Fax in the search field
  3. Choose the Send a Fax option
  4. Snap a photo or upload a document
  5. Type the receiving fax number with the required codes

DoNotPay will soon notify you that the fax is on its way to the receiver.

Our learning center is a great way to find out more about fax numbers, including:

DoNotPay Leads the Way Against Spammers

Browsing the internet has never been more popular than today, but you must not forget to keep your private and financial information safe. You know you can cancel any streaming service or magazine subscription easily, but that won't stop them from using your personal details for marketing purposes.

DoNotPay has a solution for that!

Is a company pestering you with incessant robocalls, spam emails and text messages? Use our Virtual Credit Card to catch them in the act and claim compensation for your troubles.

To prevent that from happening ever again, use our card to sign up for free trials—not only will you not pay a dime for the service, but you will be automatically unsubscribed as soon as the trials are up!

If you want to avoid revealing your personal phone number, we'll generate a temporary burner phone for you so the company won't have any way to reach you.

Already Been Scammed? DoNotPay Knows the Way!

If you've already made the mistake and divulged your personal info to the wrong party or experienced any other kind of crime or injustice, you don't have to sit tight and suffer the consequences. DoNotPay can assist you in taking anyone to small claims court!

We'll help you gather evidence—correspondence proving stalking or harassment took place, customer service call recordings, denied chargeback and refund claims, online fax transcripts, or proof of copyright violation. Then, we'll fill out the relevant legal documents for you and draft a court script that you can use in your hearing.

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