What Country Code Is Calling Me? How to Identify It

Your phone lights up with a number that starts with a plus sign and a string of digits you've never seen. Before you decide what to do, look at the first few digits after the +. They are the country code, and under the international numbering standard they point to the country the number is assigned to. The rest of the number is the national number.

The plus sign itself says nothing about the country. It's the recommended symbol for "you need an international prefix to dial this." It tells you the number is written in international form, nothing more.

How an international number is put together

The ITU's E.164 standard splits a geographic international number into two fields: the country code first, then the national significant number. Country codes run from one to three digits. The whole number, country code included, tops out at 15 digits.

That one-to-three-digit range is where people slip. Read left to right and don't stop at the first digit. A number that begins +2 isn't from "country 2"; +234 is Nigeria's code and +254 is Kenya's. The same goes for +5 and +6: +52 is Mexico, +63 is the Philippines.

Ignore the spaces, dashes and parentheses when you match the code. What counts is the run of digits right after the +.

Look up the code

Once you have the code, match it to a country. Our country code pages show which country each code belongs to, along with how to dial it from the US. A few examples:

Keep in mind what the lookup answers. It tells you where the number on your screen is assigned. It doesn't tell you who is calling or where they're sitting, for reasons covered below.

The +1 trap

Most people assume +1 means home. It doesn't always. The ITU gave country code 1 to the whole North American Numbering Plan area, and the ITU's own list puts the United States, Canada, Jamaica, the Bahamas, the Dominican Republic and Puerto Rico under that single code.

NANPA, the plan's administrator, describes it as one integrated numbering plan shared by 20 North American countries. Besides the US and its territories, that includes Canada, Bermuda and a long list of Caribbean nations, among them Barbados, Jamaica, and Trinidad and Tobago.

Every one of those numbers has the same 10-digit shape: a three-digit area code, then a seven-digit local number. Nothing in that format separates a Caribbean number from one in Ohio. Only the area code does, so a +1 call from an area code you don't recognize deserves a quick check before you call back.

Scammers count on that. The FTC warns that one-ring scam calls use three-digit area codes that look domestic but are tied to international numbers, often in the Caribbean. The area codes it lists include 268, 284, 473, 664, 649, 767, 809, 829, 849 and 876. Our guide to one-ring scam area codes goes into those codes and why a callback can cost you.

Caller ID can be faked

Now the catch. The FTC says scammers can make any name or number show up on your caller ID, and that this is called spoofing. A call that looks local, or looks like it's from a government agency, could come from a scammer anywhere in the world.

Spoofing works in both directions. The FCC has warned that a call placed overseas can show up with your own area code and local exchange, so it looks like a neighbor. And a number showing +44 or +234 may not have been dialed from the UK or Nigeria at all.

Spoofing with bad intent is illegal. FCC rules bar anyone, including callers outside the US who are reaching people in the US, from knowingly sending misleading or inaccurate caller ID to defraud, cause harm or wrongfully obtain anything of value. A rule on paper doesn't make the number on your screen trustworthy, though. Treat the country code as a clue about the number, never as proof about the caller.

What to do next

With an unexpected missed call from a code you don't know, don't call back. The FTC's point about one-ring calls is that getting the call isn't the danger; calling back and racking up a bill is.

• Let it go to voicemail. The FCC's advice is not to answer calls from unknown numbers and not to give personal information to anyone who calls. A real caller can leave a message.
• Check claims on your own. If the caller says they're your bank, a delivery company or an agency, hang up and call back using the number on the organization's website or your latest bill.
• Don't press buttons or say "yes." If a recording offers to take you off a list when you press a key, or asks a yes-or-no question, the FCC says to just hang up.
• Block repeat numbers. Cell phones let you block specific numbers, though there may be a cap on how many. Since caller ID can be spoofed, the same scam may return from a new number.

Already called one back and saw a strange charge? Start with your carrier and try to get it reversed. If that fails, the FTC says to file complaints with both the FTC and the FCC.

Report the call

If you didn't lose money, the FTC's form at DoNotCall.gov is the place to report the call. If you lost money or know something about the scammer, use ReportFraud.ftc.gov instead. Write down three numbers before you delete anything: yours, the one on your caller ID (even if you suspect it's fake) and any number the caller told you to call back.

FAQ

How many digits is a country code?

One to three. The full international number, including the country code, can be up to 15 digits.

Is a +1 number always from the US?

No. Code 1 covers the whole North American Numbering Plan, which includes Canada and a number of Caribbean countries as well as the US. Check the area code.

Can someone fake a foreign or local number?

Yes. According to the FTC, any name or number can be made to show up on caller ID.

Is it safe to answer a call from an unknown international number?

The FTC says there's no danger in just getting a one-ring call; the risk comes from calling back. If you do answer, don't share personal information, and hang up if you're asked to press a key or say yes.

Sources

1. International Telecommunication Union (ITU): Recommendation ITU-T E.164: The international public telecommunication numbering plan (accessed 2026-09-24)
2. International Telecommunication Union (ITU): List of ITU-T Recommendation E.164 assigned country codes (Annex to ITU Operational Bulletin No. 1114) (accessed 2026-09-24)
3. Federal Trade Commission (Consumer Advice): Phone Scams (accessed 2026-09-24)
4. North American Numbering Plan Administrator (NANPA): About NANPA and the North American Numbering Plan (accessed 2026-09-24)
5. Federal Trade Commission (Consumer Advice): "One-ring" cell phone scam can ding your wallet (accessed 2026-09-24)
6. Federal Communications Commission (FCC): Consumer Alert: Protect Yourself Against 'Neighbor Spoofing' (accessed 2026-09-24)
7. Electronic Code of Federal Regulations (FCC rules): 47 CFR 64.1604 - Prohibition on transmission of inaccurate or misleading caller identification information (accessed 2026-09-24)
8. Federal Trade Commission (Consumer Advice): How To Block Unwanted Calls (accessed 2026-09-24)