Last reviewed: 2025-01-07 · Reading time: 5 minutes
How do you dial United States from Argentina?
- Country code
+1- All numbers numbers
-
Example:
+1 212 123 4567All US numbers are 10 digits: 3-digit area code + 7-digit local number. Mobile and landline use the same format.
- Toll free numbers
-
Example:
+1 800 123 4567Toll-free numbers (800, 888, 877, 866, 855, 844, 833) may not work from international locations or may charge standard international rates.
Common mistakes to avoid
- Trying to call toll-free numbers internationally—they often don't work or aren't free from abroad
- Forgetting the area code—always dial all 10 digits
- Not accounting for US time zones (4 continental + Alaska/Hawaii)
When is the best time to call United States?
Timezone: 4 continental time zones: Eastern (UTC-5), Central (UTC-6), Mountain (UTC-7), Pacific (UTC-8)
East coast
6:00 PM - 9:00 PM Eastern (8:00 PM - 11:00 PM Argentina time your time)
New York, Miami, Boston, Washington DC. Argentina is 2 hours ahead (1 hour during US DST).
West coast
5:00 PM - 8:00 PM Pacific (9:00 PM - 12:00 MN Argentina time your time)
Los Angeles, San Francisco, Seattle. Argentina is 5 hours ahead (4 hours during US DST).
What should you know about calling United States?
The US has extensive mobile coverage in populated areas. Major carriers
are Verizon, AT&T, and T-Mobile. Rural areas may have limited service.
Mobile and landline rates may differ depending on your calling plan.
Call quality to US cities is excellent. VoIP connections are clear and
reliable. If calling rural areas, you may occasionally experience
quality issues on the US end due to limited tower coverage.
Cultural tips
Americans are generally flexible about call timing but avoid calling
during dinner (6-8 PM local) or after 9 PM. Business hours are typically
9 AM - 5 PM. Americans often prefer texting to confirm before calling.
Voicemail is commonly used—leave a message if they don't answer.
Holidays to know
Hard to reach people during Thanksgiving (4th Thursday of November—
major travel holiday), Christmas/New Year, July 4th, and Memorial Day/
Labor Day weekends (late May/early September). These are often family
travel times with busy schedules.
Alternatives to phone calls
WhatsApp is popular among Hispanic communities in the US. iMessage
works for Apple users. For business contacts, email or scheduled calls
are preferred. Facebook Messenger and Instagram DMs are common for
younger contacts.
Frequently asked questions
What's the time difference between Argentina and the US?
Argentina (UTC-3) compared to US time zones:
- Eastern (NYC, Miami, Boston): 2 hours behind Argentina (1 hr during DST)
- Central (Chicago, Houston, Dallas): 3 hours behind (2 hrs during DST)
- Mountain (Denver, Phoenix): 4 hours behind (3 hrs during DST)
- Pacific (LA, San Francisco, Seattle): 5 hours behind (4 hrs during DST)
Argentina doesn't use DST, but most US states do (March-November).
What are the area codes for major US cities?
East Coast:
New York City: 212, 646, 917, 718, 347 · Miami: 305, 786 · Boston: 617, 857 · Washington DC: 202 · Philadelphia: 215, 267 · Atlanta: 404, 470
Central:
Chicago: 312, 773 · Houston: 713, 832 · Dallas: 214, 469 · San Antonio: 210 · Austin: 512
West Coast:
Los Angeles: 213, 310, 323, 818 · San Francisco: 415, 628 · San Diego: 619, 858 · Seattle: 206 · Phoenix: 602, 480 · Las Vegas: 702
Why do US cities have multiple area codes?
As cities grew and mobile phones became common, original area codes
ran out of numbers. New codes were added as "overlays." New York City
has 5+ area codes, Los Angeles has 4+. All codes for a city work
identically—no difference in service or cost between them.
Can I call US toll-free numbers from Argentina?
Sometimes, but they're often not toll-free from international locations.
Numbers starting with 800, 888, 877, 866, 855, 844, or 833 may:
- Not connect at all from abroad
- Connect but charge international rates
- Require a US phone number to call
Look for the company's international contact number instead.
How do I know if a US number is mobile or landline?
You can't tell from the number—US mobile and landline numbers share
area codes and look identical. If your rates differ for mobile vs
landline, ask your contact which type of number it is. Most personal
numbers these days are mobile.
Current rates
$0.04-$0.14/min
Rates vary by mobile vs landline. Billed per minute, rounded up.
View all rates →