Country Code 001- Everything You Need to Know

What Is Country Code 001?

Country code 001 is the international dialing prefix for the United States and Canada. When you see a phone number listed as +1 (XXX) XXX-XXXX, that +1 is the country code.

It works differently depending on where you're calling from. If you're outside North America, you dial your country's exit code first, then +1, then the 10-digit number. If you're in the US or Canada, you just dial the 1 before the area code.

That's it. No tricks, no hidden fees, just the code that connects you to ~330 million people across two massive countries.

Why Does the US and Canada Share the Same Code?

Historical reasons. When the North American Numbering Plan (NANS) was established in 1947, Canada was included in the system. Both countries had interconnected telephone infrastructure, so it made sense to group them under one country code.

Mexico? Different code. +52. Mexico got carved out because their phone system developed separately from the US-Canada network.

How to Dial Using Country Code 001

From Outside the US/Canada

Here's the format:

+ [Your Exit Code] - 1 - [Area Code] - [7-Digit Number]

Common exit codes:

• UK: 00
• Germany/France/Italy: 00
• Australia: 0011
• Japan: 010
• India: 00

Example: Calling a New York number from London

00 + 1 + 212 + 555-1234 = 00 1 212 555 1234

From Inside the US or Canada

Drop the +. Just dial 1 before the area code.

Example: Calling LA from New York

1 + 310 + 555-1234 = 1 310 555 1234

Local calls within your area? Don't dial anything extra. Just the 7-digit number.

All US/Canada Area Codes You Should Know

There are roughly 350+ area codes between the US and Canada. Here's a quick reference for the major ones:

Full list? Hundreds. But these cover 80% of the business calls you'll make.

Common Mistakes When Dialing 001

• Forgetting the + sign — If you're texting or using a VoIP app, you need the + before the 1. Regular phones may not require it, but apps absolutely do.
• Confusing 001 with 1 — 001 is for international callers. Domestic callers in the US just use 1. Same number, different context.
• Adding extra digits — Some people dial 0011 thinking they need an extra code. You don't. 001 is the complete international prefix.
• Using the wrong exit code — Every country has a different exit code. Look yours up before dialing.

Country Code 001 vs. Other Major Country Codes

How to Save International Numbers Correctly

Want to store a US/Canada number so it works globally?

Save it as: +1XXXXXXXXXX

The + tells your phone to use the international format regardless of where you are. No need to add exit codes manually.

If you save it as 1-XXX-XXX-XXXX without the +, your phone might interpret it differently depending on your location. Some phones handle it fine. Some don't.

Getting Started: Making Your First International Call to the US/Canada

Step 1: Identify your exit code

Look up the exit code for the country you're calling from.

Step 2: Get the full number

You need: Exit Code + 1 + Area Code + Local Number

Step 3: Dial

Example from Germany calling a Chicago number (312-555-6789):

00 1 312 555 6789

Step 4: Wait for connection

International calls to the US/Canada typically connect within 10-30 seconds. If it rings busy, try again — networks get congested.

Business Use: Why Country Code 001 Matters

If you're running a business that deals internationally, US/Canada numbers appear in:

• Customer support lines
• Toll-free numbers (800, 888, 877, 866, 855, 844)
• Virtual phone systems
• Conference calling services

Many VoIP providers let you get a US number even if you're based abroad. This makes your business look established in North America without needing a physical office.

Common toll-free prefixes that use country code 1:

• 800
• 888
• 877
• 866
• 855
• 844

Dialing a toll-free number internationally? You might get charged. Toll-free numbers are free only within the country. From abroad, they cost money.

The Bottom Line

Country code 001 (or +1) is your gateway to the US and Canada. Remember these three things:

• +1 is the international format. 1 is the domestic format.
• Always include the + when saving numbers for global use.
• Know your exit code. It changes depending on where you're calling from.

That's all you need. Dial, connect, done.