US phone number lookup (+1)

Who called you from +1? Look up any United States mobile, landline or toll-free number to see the carrier, line type, region and spam reports — free and anonymous.

Unknown calls from United States

Americans get a steady stream of calls from numbers they don’t recognize, and many of them are robocalls. Some are legitimate — a pharmacy, a doctor’s office, a delivery driver, a school — while others push car warranties, fake debt relief or government impersonation. Because scammers routinely spoof local area codes, a call that looks like it comes from your own town proves very little. Before calling back or answering a follow-up text, it makes sense to check whether a number belongs to a toll-free line, which state its area code points to, and whether other people have flagged it as spam.

United States phone numbers at a glance

Country calling code: +1
Trunk prefix: 1
Number format: Ten digits under the North American Numbering Plan: a three-digit area code, a three-digit exchange and a four-digit line number. Mobile and landline numbers share the same area codes.
Example (national): (202) 555-0143
Example (international): +1 202 555 0143
Emergency number: 911
Telecom regulator: Federal Communications Commission (FCC)

To call a US number from abroad, drop the leading 1 and dial +1 first: (202) 555-0143 becomes +1 202 555 0143. A missed call showing +1 at the start came from a United States number.

How to tell what kind of US number called you

Mobile numbers

Type	Starts with	Notes
Mobile and landline (shared)	Any area code	US numbering does not set aside separate mobile prefixes. A cell phone and a landline in the same city use the same area codes, so the number alone won’t tell you which it is.

Toll-free, premium and special numbers

Type	Starts with	Notes
Toll-free	800, 833, 844, 855, 866, 877, 888	Free for the caller inside the US. Widely used by banks, airlines and retailers — and also by robocallers who rent cheap toll-free lines.
Premium-rate	900	Pay-per-call services billed above normal rates. Rarely used today; treat unexpected requests to dial a 900 number with suspicion.
Directory and service codes	211, 311, 411, 511, 711	Three-digit N11 codes for community services, city information, directory assistance, traffic information and relay services for people with hearing or speech impairments.

Mobile networks in United States

Numbers can be ported between networks, so the prefix alone does not prove which carrier a number is on today. A WhoCallsMe lookup reads the current carrier of record. The main mobile operators are:

Verizon
AT&T
T-Mobile

Common phone scams in United States

IRS and Social Security impersonation

A caller or recorded message claims your Social Security number has been suspended or that you owe back taxes, and threatens arrest unless you pay immediately. Real agencies normally contact you by mail first and never demand payment by gift card, wire transfer or cryptocurrency. Hang up and contact the agency through its official website.

Unpaid toll texts

Text messages claim you owe a small unpaid toll and link to a site imitating E-ZPass, SunPass or another toll agency. The page asks for card details to avoid a late fee. Toll agencies don’t usually collect payments through random text links, so check your balance by typing the agency’s address into your browser yourself.

Extended car warranty robocalls

A recorded voice warns that your vehicle’s warranty is about to expire and urges you to press 1. These calls are typically not from your dealer or manufacturer, and pressing keys can confirm your number is active and lead to more calls. Let them go to voicemail and contact your dealer directly if you have questions.

Report scam calls in United States

Report fraud to the FTC at reportfraud.ftc.gov, file unwanted-call complaints with the FCC, and forward scam texts to 7726 (SPAM) so your carrier can block the sender.

Stop unwanted calls

National Do Not Call Registry (donotcall.gov), run by the Federal Trade Commission. Registration is free and covers home and mobile numbers.

United States number lookup FAQ

Can I tell if a US number is a cell phone?+

Not from the digits alone. Mobile and landline numbers share area codes, and numbers can be ported between carriers and service types. A carrier lookup can sometimes indicate the line type, but the area code mainly tells you where the number was originally assigned.

Why do I get calls from numbers that look almost like mine?+

This is called neighbor spoofing. Robocallers fake a caller ID that shares your area code and exchange so you assume it’s someone local. The number shown usually isn’t the real source, and calling it back may reach an unrelated person who never called you.

Who called me from an 800 or 888 number?+

It could be a bank, retailer, airline or collection agency, since toll-free lines are common for business. It could also be a telemarketer. Searching the number on WhoCallsMe shows whether others have reported it, and you can verify legitimate companies by calling the number printed on your statement.

More phone lookups in North America

Canada +1