How do I get a fax number?

There are four ways: sign up with an online fax service (fastest — the number is live in minutes), add a fax line through your phone or VoIP provider, install a fax machine with a dedicated phone line, or port a number you already own to a new provider. For most people, an online fax service is the quickest and cheapest way to get a number for receiving faxes.

How can I get a fax number instantly?

Use an online fax service. With FaxFlow: download the app on iPhone or Android (or use the web dashboard), choose a Send+Receive plan, and your dedicated US fax number is assigned and ready to receive faxes within minutes. No phone line, fax machine, or installation needed.

Can I get a fax number for free?

A genuinely free, dedicated fax number is rare. Free fax offerings usually cover sending a few pages with ads, and free inbound numbers — where they exist — tend to be shared, limited, or reclaimable. If you receive faxes regularly, a paid number is the reliable option. FaxFlow includes a dedicated number with its Send+Receive plans, and a free trial is available.

How much does a fax number cost?

With FaxFlow, a dedicated fax number is included in Send+Receive plans at $14.99/week, $34.99/month, or $199.99/year — sending and receiving are both covered, with no per-page fees on incoming faxes. A traditional dedicated phone line plus fax machine generally costs more once hardware and monthly line fees are added up. See the FaxFlow pricing page for current details.

Do I need a fax number to send faxes?

No. You only need the recipient’s fax number to send. Your own number matters only if you want to receive faxes. FaxFlow’s send-only plans let you send faxes online without a number, and Send+Receive plans add a dedicated number for incoming faxes.

Can I keep my existing fax number?

In the US, fax numbers are generally portable between providers under FCC number-portability rules, though ports take days to weeks and require proof of ownership. Keep your old service active until the port completes. FaxFlow assigns a new dedicated number with Send+Receive plans rather than porting in existing numbers.

What happens when someone sends a fax to my number?

The fax is received digitally, converted to a PDF, and delivered to your FaxFlow app, with an email notification so you know it arrived. You can view, download, or forward it from any device. Received faxes are stored for 30 days, so download anything you want to keep permanently.

What is the difference between a local and toll-free fax number?

A local fax number starts with a geographic area code tied to a region, while toll-free numbers start with 800, 888, 877, 866, or 855 and have no location attached. Both send and receive faxes identically — the choice is about how your business presents itself, not functionality.

How to Get a Fax Number — Online, Free Options & Porting

There are four ways to get a fax number: an online fax service (ready in minutes, no phone line), your phone or VoIP provider, a fax machine with a dedicated line, or porting a number you already own. This guide covers how each one works, what free options really look like, and how receiving faxes online actually works.

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Quick Answer: The 4 Ways to Get a Fax Number

Online fax service — sign up, pick a plan that includes a number, and it's live in minutes. No phone line or hardware; faxes arrive as PDFs on your phone or computer. This is the fastest and simplest option for most people.
Your phone or VoIP provider — add a fax line or fax feature to an existing phone account. Works, but standard VoIP lines handle fax poorly without special support, and setup can take days.
A fax machine + dedicated phone line — the traditional route. The line's phone number becomes your fax number, but you pay for hardware and a monthly line, and it only works at one location.
Port a number you already own — transfer an existing fax number to a new provider so clients can keep using it. Possible for most US numbers, but it takes days to weeks and not every provider ports numbers in.

Comparing Your Options

Method	Time to get a number	What you need	Best for
Online fax service	Minutes	A phone or computer + subscription	Most people and small businesses
Phone / VoIP provider	Days	Existing phone account, often extra hardware	Businesses whose phone system supports fax
Fax machine + phone line	Days to weeks	Fax machine + dedicated analog line	Offices that must keep physical fax hardware
Porting an existing number	Days to weeks	Proof of ownership + a provider that ports in	Businesses with a long-published fax number

How it works

How to Get a Fax Number Instantly Online

The online route skips the phone company entirely. With FaxFlow, getting your own fax number takes a few minutes — no fax machine, no phone line, no installation.

Download FaxFlow

Get the app on iPhone or Android, or use the web dashboard from any browser.

Pick a Send+Receive Plan

Fax numbers are included with Send+Receive plans — weekly, monthly, or annual.

Get Your Number

Your dedicated US fax number is assigned from available options and ready to use right away.

Share It & Receive

Give the number to anyone who faxes you. Incoming faxes arrive as PDFs in the app, with an email notification.

Two things worth knowing before you subscribe:

Your number stays yours for as long as your subscription is active. If you cancel, the number is eventually released — so keep the plan running if people rely on that number to reach you.
Received faxes are stored for 30 days and then automatically deleted for privacy, so download anything you want to keep long-term.

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Dedicated fax number included

Can You Get a Free Fax Number?

The honest answer: a genuinely free, dedicated fax number is rare. Some services advertise free faxing, but the free tier usually means sending a few pages with ads — not getting your own number for receiving. Where free inbound numbers do exist, they typically come with serious catches:

You can't choose the number, and it may be shared or randomly assigned
Tight page or usage limits before you're pushed to a paid tier
The number can be reclaimed if you don't use it — a real problem if clients have it on file

If you only need to send an occasional fax, you don't need your own number at all — any online fax service (including FaxFlow's send-only plans) can do that. A number only matters when you need to receive faxes.

FaxFlow is a paid service with a free trial. A dedicated fax number is included with Send+Receive plans — $14.99/week, $34.99/month, or $199.99/year — with no per-page fees on incoming faxes. See current pricing for details.

Local vs. Toll-Free Fax Numbers

Fax numbers use the same numbering system as phone numbers, so the same two flavors exist. Functionally, both send and receive faxes exactly the same way.

Local Numbers

Start with a geographic area code (like 212 or 415), so they look familiar to local clients
The standard choice for most individuals and small businesses
Widely available from online fax services, including FaxFlow's US-based numbers

Toll-Free Numbers

Start with 800, 888, 877, 866, or 855 and aren't tied to any location
Common for large organizations and government agencies that want a national presence
Historically meant the sender paid nothing for the call — less relevant now that most faxing is digital

For receiving faxes, the type of number makes no practical difference — pick whatever fits how your business presents itself.

Can You Keep Your Existing Fax Number? (Porting Basics)

Usually, yes. In the United States, phone numbers — including fax numbers — are generally portable between providers under FCC number-portability rules. If your fax number is printed on letterhead, contracts, and directories, porting lets you switch providers without losing it.

What porting typically involves, whichever providers are on each end:

Proving you own the number (a recent bill or letter of authorization)
A waiting period — ports commonly take anywhere from a few days to a few weeks
Keeping your old service active until the port completes — canceling early can forfeit the number

Not every provider ports numbers in, and terms differ, so check before you sign up if keeping your number is a requirement.

Where FaxFlow fits: FaxFlow assigns you a new dedicated fax number with a Send+Receive plan rather than porting in an existing one. If you're getting a fax number for the first time — which is most people searching for one — that's the simpler path: no paperwork, no waiting, and the number is live in minutes.

Receiving

How Receiving a Fax Online Works

Once you have your number, receiving is completely hands-off. The sender doesn't need to do anything different — they fax your number like any other.

1. Someone faxes your number

They can send from a physical fax machine or another online fax service — your number works with both.

2. It arrives as a PDF

The transmission is received digitally and converted to a PDF — no paper, no toner, no machine sitting on a desk.

3. You get notified

FaxFlow sends an email notification and the fax appears in the app, where you can view, download, or forward it from any device.

Every fax sent or received through FaxFlow is protected with 256-bit SSL/TLS encryption in transit, and received faxes are kept for 30 days so you can download what you need.

FAQ

Fax Number FAQs

Common questions about getting a fax number, what it costs, and how receiving faxes online works.

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How do I get a fax number?
There are four ways: sign up with an online fax service (fastest — the number is live in minutes), add a fax line through your phone or VoIP provider, install a fax machine with a dedicated phone line, or port a number you already own to a new provider. For most people, an online fax service is the quickest and cheapest way to get a number for receiving faxes.
How can I get a fax number instantly?
Use an online fax service. With FaxFlow: download the app on iPhone or Android (or use the web dashboard), choose a Send+Receive plan, and your dedicated US fax number is assigned and ready to receive faxes within minutes. No phone line, fax machine, or installation needed.
Can I get a fax number for free?
A genuinely free, dedicated fax number is rare. Free fax offerings usually cover sending a few pages with ads, and free inbound numbers — where they exist — tend to be shared, limited, or reclaimable. If you receive faxes regularly, a paid number is the reliable option. FaxFlow includes a dedicated number with its Send+Receive plans, and a free trial is available.
How much does a fax number cost?
With FaxFlow, a dedicated fax number is included in Send+Receive plans at $14.99/week, $34.99/month, or $199.99/year — sending and receiving are both covered, with no per-page fees on incoming faxes. A traditional dedicated phone line plus fax machine generally costs more once hardware and monthly line fees are added up. See the pricing page for current details.
Do I need a fax number to send faxes?
No. You only need the recipient's fax number to send. Your own number matters only if you want to receive faxes. FaxFlow's send-only plans let you send faxes online without a number, and Send+Receive plans add a dedicated number for incoming faxes.
Can I keep my existing fax number?
In the US, fax numbers are generally portable between providers under FCC number-portability rules, though ports take days to weeks and require proof of ownership. Keep your old service active until the port completes. FaxFlow assigns a new dedicated number with Send+Receive plans rather than porting in existing numbers.
What happens when someone sends a fax to my number?
The fax is received digitally, converted to a PDF, and delivered to your FaxFlow app, with an email notification so you know it arrived. You can view, download, or forward it from any device. Received faxes are stored for 30 days, so download anything you want to keep permanently.
What is the difference between a local and toll-free fax number?
A local fax number starts with a geographic area code tied to a region, while toll-free numbers start with 800, 888, 877, 866, or 855 and have no location attached. Both send and receive faxes identically — the choice is about how your business presents itself, not functionality.

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Download FaxFlow, choose a Send+Receive plan, and start receiving faxes as PDFs on your phone or computer — no fax machine, no phone line, no waiting.

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