Is This a Cell Phone Number? 4 Ways to Check

To check if a phone number is a cell phone, look at where it's from. Outside North America the prefix usually answers it: UK cell numbers start 07, Australian 04, French 06 or 07. In the US and Canada the digits can't tell you, because cell phones and landlines share area codes and numbers move between them. There, a carrier lookup is the reliable way: it asks the networks' routing data what kind of line serves the number today.

Here are four ways to check, from free and quick to reliable at scale.

1. Read the prefix (outside North America)

Most countries give mobile numbers their own prefixes, so the first digits tell you the line type.

Country	Cell numbers start with	Example
United Kingdom	07	07911 123456
Australia	04	0412 345 678
France	06 or 07	06 12 34 56 78
Germany	015, 016, 017	0151 23456789
India	6, 7, 8 or 9 (10 digits)	98765 43210
United States, Canada	No separate prefix	(415) 555-2671

The prefix tells you which range the number was allocated from. A number can occasionally be ported in ways that break this, but in most countries a mobile number stays in a mobile range. For country-by-country formats, see our phone format hub.

2. Run a free format check

A free check reads the prefix rules for you, for every country at once. Paste a number into the free phone number validator and you get the country, the E.164 format, and the line type its range belongs to.

Under the hood it uses Google's open-source libphonenumber, the same library Android uses for your contacts. For a UK 07 number it answers mobile. For a US number it answers mobile or landline, because that's the honest answer from the numbering plan.

That last result is why people searching "is this a cell phone number" are usually asking about US numbers.

3. Use a carrier lookup (US and Canada)

In North America, only a carrier lookup can tell a cell phone from a landline. Since number portability, a customer can move a landline number to a cell carrier and keep the digits (the FCC explains porting here). The lookup reads the routing data that records which carrier serves each number now, and returns:

• the line type: mobile, landline or VoIP;
• the carrier name.

It costs a fraction of a cent per number because it queries a live database. For more on how it works, see mobile vs landline lookup and phone carrier lookup.

One thing to watch: VoIP numbers, such as Google Voice, often behave like cell phones to the person using them but are their own line type to a lookup. See how to check if a number is VoIP.

4. Check a whole list at once

For a list, you want a line-type column you can filter. In SimpleVerifier:

1. Export your list as a CSV with a phone column. Email columns can stay in the same file.
2. Upload it on the verifier. Numbers without a country code are read as US numbers.
3. Every valid number gets phone_type from the numbering plan. Outside North America, mobile here answers the question.
4. On the Email + Phone plan ($49.99/month), each number also gets a live carrier lookup, adding phone_line_type (mobile, landline or VoIP) and phone_carrier. That's what splits US and Canadian cell phones from landlines. The plan includes 5,000 lookups a month, and failed lookups don't count.
5. Filter the download on line type: cell phones for SMS, everything else for calls or email.

The $29.99 Pro plan includes unlimited format, country and numbering-plan type checks, which is enough for most non-US lists.

What about just calling or texting it?

You can. A text to a landline usually fails or turns into a voice call, and a call tells you who answers. But it doesn't scale, it costs you time on every number, and in the US, automated calls and texts to cell phones come with consent rules under the Telephone Consumer Protection Act. The FCC's guide to robocalls and robotexts is a good starting point. (This isn't legal advice; check the rules that apply to you.)

Why the answer matters

• Texting: landlines generally can't receive SMS, so sending to them wastes money and can count against your sender reputation. See validating phone numbers for SMS.
• Calling: sales teams often prioritise cell numbers for direct reach. See phone validation for cold calling.
• Compliance: different rules can apply to cell numbers than to landlines.

What a cell phone check can't tell you

Knowing a number is a cell phone doesn't mean the person on your list still owns it, or that it's switched on. Numbers are disconnected and reassigned. For US numbers, the FCC's Reassigned Numbers Database lets callers check whether a number has been permanently disconnected since a given date.

Start with the free phone number validator for a single number, or upload a list to check them all.