Call family in Buenos Aires, a supplier in Cordoba, or a wine bodega in Mendoza straight from your browser, with the +54 9 mobile trick handled for you.
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Rates updated October 31, 2026
To reach a Argentina number from the United States, dial these three parts in order.
011 54 9 11 2345 6789
From any mobile, anywhere in the world, you can dial +54 9 11 2345 6789 instead. Press and hold 0 to type the +, and the phone picks the right access code for wherever you are.
Numbers in Argentina are written more than one way locally, so copying one off a sign or a card is unreliable. Dial the international form, +54 9 11 2345 6789, which is the version that always connects.
Mobile numbers in Argentina are not all the same length (this example has 11 digits after +54), so a different count is not a mistake in itself. If a call does not connect, check the start of the number against the rule above.
Only the first part changes. Your access code replaces the 011, then 54 and the number stay exactly the same.
A ~ means wait for the second dial tone before dialing the rest. It is not a digit you press.
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The heaviest inbound traffic to Argentina comes from the Argentine diaspora, estimated at roughly 1.2 to 1.5 million people worldwide - Migration Policy Institute. In the United States the community reached about 290,000 Argentine Americans by 2021, a 169% jump since 2000 - Wikipedia, clustered in Miami (the famous "Little Buenos Aires" of North Beach and Aventura), Los Angeles, and the New York metro. These callers dial home to parents in the Buenos Aires suburbs, to grandparents in the interior provinces, and to the accountant or escribano handling property and inheritance while the family is abroad. A Miami son calling his mother's 11 landline in Palermo, or a Los Angeles daughter reaching a 223 Mar del Plata mobile, is the archetypal inbound call.
Beyond the US, the two giant corridors are Spain and Italy, the historic destinations of Argentine emigration, where the resident Argentine population surged during the early-2000s crisis - Migration Policy Institute. Dual Italian-Argentine citizenship keeps a constant flow of calls between Buenos Aires and Milan or Rome. Regionally, neighboring countries call in heavily: Uruguay treats Buenos Aires as an extension of Montevideo, while Chile, Paraguay, Bolivia, and Brazil share deep family and trade ties. There is also steady business inbound to Argentina's agribusiness, software, and wine sectors, aimed at Cordoba (351), Rosario (341) on the Parana grain belt, and Mendoza (261) wine country.
From inside Argentina, the international access code is 00 (not the US-style 011), so a call to the United States is dialed 00 1 then the 10-digit US number, and a call to Spain is 00 34 - Wikipedia. The dominant outbound destinations mirror the diaspora in reverse: Spain, Italy, the United States, and Israel, plus constant cross-border calling to Uruguay (+598), Chile (+56), Paraguay (+595), and Brazil (+55). A quirk worth knowing: because international minutes historically carried steep tariffs and Argentina has lived through repeated currency and capital controls (the famous "cepo"), most Argentines default to WhatsApp voice calls for staying in touch abroad, and reserve real phone dialing for landlines, banks, government lines, and businesses that do not answer chat. When they do dial out, they still drop their domestic trunk 0 and use 00 plus the destination country code.
Start with your international access and the country code 54. From the US that is 011 54; from most other countries it is 00 54. A +54 entry in the dialer handles this automatically.
For a MOBILE, insert a 9 immediately after 54, then the area code WITHOUT its trunk 0, then the 8-digit subscriber number: 011 54 9 11 2345 6789 reaches a Buenos Aires cellphone.
For a LANDLINE, do NOT add the 9: dial 011 54, then the area code without the 0, then the subscriber number, for a 10-digit national number (e.g. 011 54 11 4321 1000).
Always DROP the domestic 15 mobile prefix and the trunk 0 when calling from abroad. The 15 is replaced by the leading 9; the 0 is a domestic-only trunk code.
Sanity check: after +54 (and the 9 for mobiles) the national number should be exactly 10 digits. If you have 11, you left a stray 15 or 0 in it.
The most common failure is the mobile 9: a cellphone written locally as "15 2345-6789" must be dialed from abroad as +54 9 [area code] 2345 6789, dropping the 15 and adding the 9 - Wikipedia. Landlines take no 9. The trunk 0 (used domestically before the area code) is never dialed from outside Argentina. Area codes vary in length (2 digits for Buenos Aires 11, 3 for Cordoba 351, 4 for Bariloche 2944), but the national number is always 10 digits total - Wikipedia. Note that 0800 toll-free, 0810 local-rate, and 0600 premium numbers are domestic-only and generally cannot be reached from abroad, so ask for the standard geographic number instead - Wikipedia.
Number portability is the first thing that breaks the old assumption that a prefix tells you the carrier. Argentines have run more than 25.8 million operator switches between March 2012 and mid-2025, and roughly six in ten ported lines have changed hands more than once (ENACOM portability data via CABASE). Portability is administered by the regulator ENACOM (ENACOM: Portabilidad Num茅rica), so a line no longer reliably belongs to Personal, Claro, or Movistar based on its digits. You cannot infer network or routing from the number: just dial it in full and let the network find the active carrier.
The second friction is screening. Years of scam, telemarketing, and bank-impersonation calls have taught people to treat an unknown number as a threat, and Argentina backs that instinct with a legally binding do-not-call list, the Registro Nacional No Llame. Created by Ley 26.951 and enforced by the data-protection agency AAIP as the autoridad de aplicaci贸n, it lets anyone register a mobile or fixed line for free, and thirty days later unsolicited commercial calls are barred (Argentina.gob.ar: Registro No Llame). The practical result is a hard screening culture where an unrecognized foreign-origin call is often left to ring out. If your first attempt goes unanswered, a quick WhatsApp note saying who is calling and when usually gets the follow-up picked up.
Third, many landlines are effectively dead ends. Fixed-line call volume is down more than 60% over the decade, and fewer than 54% of households still keep an active line (CATEL, "驴El fin de la telefon铆a fija?"). Recurring inflation and currency crises reinforce the shift: network gear is dollar-priced while incomes are in pesos, which pushes households toward data-based apps and away from metered voice (ts2.tech, State of Internet Access in Argentina 2025). So an old 011 (Buenos Aires) or 0351 (C贸rdoba) line you were given years ago may simply be disconnected. Reach people on their mobile, not the number on an old business card.
Finally, institutional numbers add a trap that only bites from abroad. Non-geographic ranges such as 0800 (toll-free) and 0810 (charged at local rate) cannot be dialed from outside Argentina, and the same goes for the premium 0600 range (Telephone numbers in Argentina). A bank, utility, airline, or government office that only publishes one of these helplines is therefore unreachable internationally. To get through from the US, skip the 0800 or 0810 line and hunt down the organization's ordinary geographic +54 landline (an 011 line for Buenos Aires, 0351 for C贸rdoba, and so on), which routes normally over the international network.
An Argentine national number is always 10 digits, but it splits unevenly: the area code can be 2, 3, or 4 digits and the subscriber number is 6, 7, or 8 digits, so the two parts always add up to ten - Wikipedia. Buenos Aires uses a 2-digit code (11) with 8-digit subscriber numbers, mid-size cities like Cordoba (351) and Rosario (341) use 3 digits, and small towns like Bariloche (2944) or Ushuaia (2901) use 4-digit codes with only 6-digit local numbers. This is why a Buenos Aires number looks like 11 4567 8900 while a Patagonian one looks like 2944 45 6789: same total length, different split.
The single most confusing thing about Argentine numbers is the mobile 9 and the domestic 15. Mobiles do not have their own area codes; a Cordoba cellphone shares the 351 code with Cordoba landlines - Wikipedia. To call that mobile from within Argentina you dial a 15 prefix in front of the subscriber number (0 351 15 xxx-xxxx). To call the exact same mobile from abroad, you REMOVE the 15 and instead insert a 9 right after the country code: +54 9 351 xxx-xxxx - Wikipedia. So the same physical phone is written two completely different ways depending on where you are standing. When someone in Argentina gives you a number starting with 15, mentally translate it: drop the 15, add +54 9, and keep the area code.
One more formatting trap: an SMS to an Argentine mobile from abroad often needs the number without the 9 (just +54 area code number), even though a voice call needs the 9 - Wikipedia. For a voice call through a browser dialer, the reliable rule is: mobile means +54 9, landline means +54 with no 9.
This deserves its own section because it is the number-one reason calls to Argentina fail. Historically, the 15 prefix marked a mobile for domestic dialing and existed because mobiles were billed differently from landlines - Wikipedia. It is never used for landlines and never used from outside the country. When you see a business card in Buenos Aires printed as "Cel: 11 15 3456-7890," that 15 is a domestic instruction, not part of the international number.
To call that cell from the United States, you throw the 15 away and build the number as +54 9 11 3456 7890: the 9 replaces the role of the 15 and tells the network this is a mobile. Miss the 9 and your call either fails outright or lands on a landline that does not exist. Add the 9 to a landline and it also fails. This is unique enough that even seasoned international callers trip on it, and it is the single detail a real Argentine will check first when they hear you could not get through.
Because a browser-based service like InternationalCall.co lets you type the number in +54 form, the cleanest habit is to always enter mobiles as +54 9 followed by the area code and 8 digits, and landlines as +54 followed by the area code and its digits. Never carry the domestic 0 or the 15 across the border.
Argentine businesses lean heavily on special-prefix numbers you should recognize. 0800 numbers are toll-free for the domestic caller, 0810 numbers charge the caller a local rate no matter where in the country they are, and 0600 numbers are premium-rate - Wikipedia. The catch for anyone abroad: these are domestic-only constructs. An 0800 line generally cannot be reached from outside Argentina at all, so a bank, airline, or utility that only publishes an 0800 forces you to find its regular geographic +54 line instead. Before you rely on an 0800 for a call home, ask your contact for the standard 11 or provincial number.
Banks and government offices are the hardest lines to reach for a practical reason: they answer during Argentine business hours only, and Argentine phone menus (IVRs) are entirely in Spanish and often demand your DNI (national ID) or CUIT/CUIL tax number to authenticate you. Federal and municipal information runs through short codes like 147 (city services in Buenos Aires) and 911 for emergencies alongside the older 101 police, 100 firefighters, 107 ambulance - Wikipedia. Those short codes are domestic-only, so from abroad you cannot dial them; you need the office's full geographic number. When you call a government line, dial in the mid-morning ART window (their staffing is thin at lunch, which runs long, and they close early relative to US offices).
Argentina's mobile market is a three-carrier landscape: Claro held roughly 40%, Personal about 34%, and Movistar about 24% of subscriptions - Statista. In February 2025, Telecom Argentina acquired Telefonica's Movistar unit for about US$1.245 billion, bringing Personal and Movistar under one owner and concentrating the market further - S&P Global. For a caller this mostly means one thing: you no longer learn anything about the network from the number.
That is because mobile number portability launched nationwide on 30 March 2012, letting subscribers keep their number when they switch carriers - ENACOM. Fixed-line portability arrived much later, on 22 October 2022, ending a two-decade wait - TeleSemana. Portability is administered by the Administradora de Portabilidad Argentina (APA) under the regulator ENACOM (the Ente Nacional de Comunicaciones, successor to the old CNC) - ENACOM. The upshot: a +54 9 11 mobile could sit on any of the three networks, and the recent ability to switch in as little as 24 hours means even locals cannot guess the carrier from the digits. For an international caller this is invisible and harmless; a browser dialer routes to the number regardless of who owns the line.
Argentina has one of the region's worst unwanted-call problems, and it changes how people answer. In Q3 2024, 59% of calls to Argentine cellphones were spam or scam attempts, the second-highest rate in Latin America - La Nacion. The dominant scams are "robocalling" (a call that goes silent when you answer, mapping active numbers for later fraud) and vishing aimed at draining bank accounts, with identity-theft reports up sharply year over year - Infobae. There is also classic wangiri ("one ring"), where a missed call from an odd international code baits an expensive callback.
Because of this, Argentines heavily screen unknown and international numbers, and many simply do not pick up a call they do not recognize, preferring a WhatsApp message first. Argentina runs a Registro Nacional No Llame (National Do Not Call registry) operated by the AAIP (Agencia de Acceso a la Informacion Publica), where residents register to stop advertising calls, with a 30-day grace period before complaints can be filed - AAIP. Practical advice for calling in: if the person expects your call, tell them beforehand to watch for a call around a set time, since a strange foreign caller-ID is exactly what they have been trained to ignore. Ringing back a second time, or sending a quick heads-up message, dramatically improves your odds of being answered.
Argentina stretches from the subtropical north (Salta 387, Tucuman 381, Corrientes 379, Posadas 376) down through the Pampas (Buenos Aires 11, La Plata 221, Rosario 341) to Patagonia (Neuquen 299, Bariloche 2944, Ushuaia 2901 at the very tip) - Wikipedia. Despite the enormous distance, the whole country sits in one time zone, UTC-3, with no daylight saving since 2009 - Wikipedia, so you never have to work out a second internal offset: noon in Ushuaia is noon in Salta.
Coverage and habits do vary by region. The dense Buenos Aires metro and the big provincial capitals have full 4G/5G and answer calls readily, while remote Patagonian and northern rural areas rely more on mobile than landline, and a rural landline may sit unanswered while the household mobile is always on. In the interior, the older 4-digit area codes (like 2944 for Bariloche or 2966 for Rio Gallegos) pair with shorter 6-digit local numbers, so if a number looks short, check that you have the full 10-digit national number including the long area code. When in doubt, ask your contact to send their number in international +54 form and you will always dial it right.
The 15 is a domestic-only mobile prefix; it is not part of the international number - Wikipedia. To call from the US, drop the 15 and instead insert a 9 after the country code: a card that reads "11 15 3456-7890" becomes +54 9 11 3456 7890. The 9 does the job the 15 does locally.
You cannot tell from the area code, because mobiles use the same geographic area codes as landlines - Wikipedia. The distinction is in the dialing: a mobile takes +54 9 and a landline takes +54 with no 9. Locally, a number written with a 15 is a mobile. When unsure, ask your contact to send the number in full +54 international form.
The plan is semi-open: area codes are 2, 3, or 4 digits and subscriber numbers are 6, 7, or 8 digits, always summing to 10 - Wikipedia. Buenos Aires (11) has short codes and long local numbers; Patagonian towns like Bariloche (2944) have long codes and short local numbers. The 10-digit total is the constant to check.
Generally no. 0800 (toll-free), 0810 (local-rate), and 0600 (premium) numbers are domestic constructs that usually cannot be dialed from outside Argentina - Wikipedia. Banks, airlines, and utilities that publish only an 0800 also have a regular geographic (11 or provincial) number; ask for that to reach them from the US.
Because spam is rampant: in Q3 2024, 59% of calls to Argentine mobiles were spam or scam attempts - La Nacion. "Robocalling" and vishing scams have trained people to ignore unknown callers and prefer WhatsApp. If your call is expected, tell the person ahead of time to watch for it, and try a second ring if the first goes unanswered.
No. Mobile number portability since 2012 (and fixed-line portability since October 2022) means a number can sit on any network regardless of its digits - ENACOM. Even locals cannot guess the carrier from the number. For calling in, this makes no difference: you dial the same +54 9 number either way.
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