Phone number lookup

How phone number type detection works

Phone numbers follow strict allocation rules. In most countries, regulators assign specific prefix ranges to different number types. US landlines use geographic area codes (212 for Manhattan, 415 for San Francisco). US mobile numbers also use area codes but are assigned from different blocks. UK landlines start with 01 or 02, while UK mobiles start with 07.

This tool uses the libphonenumber dataset — the same library Google uses for phone number validation. It covers 200+ countries and territories with regularly updated numbering-plan data.

How to check if a phone number is a landline or cell phone

Enter the number in the lookup field above with the country code (e.g. +1 for US/Canada, +44 for UK). The tool sanitizes formatting characters, parses the number against the country's numbering plan, and returns the detected type.

Detection accuracy depends on how strictly the country regulates number allocation. Countries like the UK and Germany have strict separation — landlines and mobiles use completely different prefix ranges. The US and Canada are harder, because both landlines and mobiles can share the same area codes, though carrier data can still distinguish them.

Understanding phone number types

Landline (fixed line)

Traditional wired telephone numbers connected through physical infrastructure. These numbers are tied to a specific address and typically have geographic area codes that indicate location. Landlines are common for businesses, government offices, and homes.

Mobile (cell phone)

Wireless numbers associated with cellular devices. Mobile numbers use dedicated prefix ranges that differ by country. Unlike landlines, they're portable and can receive SMS.

VoIP (voice over IP)

Internet-based numbers usable from any location with a connection. VoIP numbers may look like regular landlines but route calls over the internet. Common providers include Vonage, Google Voice, and business phone systems.

Toll-free

Numbers that are free for the caller to dial. In the US these typically start with 800, 888, 877, 866, 855, 844, or 833 — the recipient pays for incoming calls. Common for customer-service lines.

Premium rate

Numbers that charge the caller a higher rate per minute, often for entertainment or support hotlines. In the US these often start with 900. Be cautious of unexpected charges.

Why knowing the phone number type matters

• Calling costs differ by type. Calling a UK mobile (+44 7xxx) costs $0.10–0.15/min through most VoIP providers; a UK landline (+44 20xx) costs $0.02–0.04/min — a 3–5× difference.
• SMS only works on mobile numbers. Texting a landline fails silently. If you need to send a verification code, confirm the number is mobile first.
• VoIP numbers may not receive all calls. Some carriers block calls to VoIP numbers for fraud prevention.
• Premium-rate numbers cost $1–10+ per minute. Scammers sometimes disguise them as support lines — checking the type first can save you from surprise charges.
• Toll-free numbers reverse the billing. In the US, 800/888/877/866/855/844/833 numbers charge the recipient, not the caller.

What this phone lookup provides

• Number type — landline, mobile, VoIP, toll-free, premium rate, or other
• Validity check — whether the format is valid for its country
• Country — which country the number belongs to
• Location — city or region for landline numbers, where available
• Carrier — the network operator, where available
• Formats — E.164, international, and national
• Timezone — the local timezone for the number's location

Frequently asked questions

Is this lookup really free?

Yes. The lookup uses publicly available numbering-plan data. There's no cost to check any number, and no account is required.

How accurate is the landline vs. cell phone detection?

It's based on official numbering-plan allocations for each country. Accuracy is very high where prefixes are strictly allocated, though number portability can occasionally cause mismatches.

Can I look up who owns a phone number?

This tool identifies the number type and carrier, not the owner. For privacy reasons, personal subscriber information isn't available through public lookups.

Does this work for international numbers?

Yes — for numbers from any country. Just include the country code (e.g. +44 for UK, +49 for Germany, +81 for Japan).

What's the difference between "valid" and "possible"?

"Possible" means the number has the right length and format to potentially be real. "Valid" means it matches the exact pattern required for that number type in that country.