Does *67 work from Brazil to block caller ID on US calls?

No, *67 is a North American calling-feature code that works only within the US and Canada, and Brazilian carriers don't pass it through on international routes. To block caller ID on calls to the US from Brazil, use the Brazilian per-call blocking prefix 0151 before the number (some carriers), or set permanent line blocking through your mobile carrier's app. On WhatsApp or Signal app-to-app calls, your caller ID never appears in the first place because there's no traditional phone number routing. Keep in mind that US institutions (banks, IRS, USCIS) won't answer or process calls from blocked numbers and may drop you mid-authentication.

Can I use a Brazilian SIM to call US toll-free numbers for free?

No, US 1-800 numbers are toll-free only from inside the United States, and your Brazilian carrier (Vivo, Claro, TIM, or Oi) will bill the call at standard international rates of R$ 2.99 to R$ 3.99 per minute. The toll-free funding model — where the called party pays — stops at the US border. Some Brazilian carriers also intermittently block toll-free routing entirely, so the call won't even connect. The workaround is to find the company's direct +1 (NXX) number (every major US bank, the IRS, and USCIS publish one), or use a browser-based service like WorldDialer that routes US calls at $0.04 per minute regardless of prefix.

What if my carrier code doesn't work on a Brazilian landline?

If 00 + 21 + 1 + US number fails on a landline with "ligação não completada," your line probably isn't enabled for international dialing (DDI), and you'll need to call your carrier to activate it. Vivo and Claro both require a separate request to enable outbound international calls on residential lines, and prepaid landline plans often have DDI disabled by default. Hotel landlines frequently have international dialing blocked entirely to prevent guest fraud. The fastest workaround: use Wi-Fi on a laptop or phone and dial through WorldDialer or WhatsApp (if the recipient is on WhatsApp), bypassing the carrier code entirely.

How to Call US from Brazil (Cheapest Way 2026)

To call the US from Brazil, dial 00 + carrier code + 1 + US area code + 7-digit number from a landline, or just +1 area code number from a cell phone. The carrier code is the part that throws people off — Brazil is the only country in this series where dialing 00 + 1 by itself does not work. You have to tell your phone which long-distance carrier to use mid-dial: 15 for Vivo, 21 for Claro, 41 for TIM, 31 for Oi.

The good news: on a Brazilian mobile, the + symbol auto-inserts both the 00 and the carrier code based on your SIM. So +1 713 262 3300 reaches Chase Bank from any cell in São Paulo without you memorizing carrier codes. The bad news: from a landline (hotel phone, office line, fixed home line), there's no + key, and you have to dial the carrier code by hand. Standard Vivo prepaid rates to the US run R$ 2.39 – R$ 3.99 per minute. Here's the format, the carrier codes that matter, and a way to pay $0.04 a minute instead.

How to Dial the US from Brazil

Brazil's international exit code is 00. After that, you dial a carrier-selection code (15, 21, 41, or 31), then the US number.

Dial 00 (Brazil's exit code) — or + on a mobile phone
Dial the carrier code: 15 (Vivo), 21 (Claro), 41 (TIM), 31 (Oi)
Dial 1 (US country code)
Dial the 3-digit US area code
Dial the 7-digit phone number
Example: 00 21 1 267 941 1000 reaches the IRS international line using Claro long-distance

On a cell phone with +, skip steps 1 and 2 — your SIM handles them. +1 267 941 1000 reaches the same IRS line. On a landline, you cannot skip the carrier code — the call won't connect, or it'll fail with "ligação não completada."

If you've seen "011" listed as the US dialing code, that's the US exit code — what people in the US dial when calling out, not what Brazilians dial when calling in. From a phone in São Paulo, you start with 00, not 011.

Which Brazilian Carrier Code Do I Use?

Pick the carrier you have long-distance service with. From a Brazilian landline, you're typically tied to one carrier's long-distance plan; from a Brazilian mobile, your SIM's default carrier is used automatically when you dial with +.

Carrier | Carrier code (CSP) | Notes

Vivo (Telefônica) | 15 | Largest Brazilian mobile carrier; also 25 from former GVT lines

Claro | 21 | Formerly Embratel; the most common landline DDI code

TIM | 41 | Required for TIM's LD 41 international long-distance plan

Oi | 31 | Legacy circuits; Oi's DDI footprint is reduced in 2026

Most São Paulo landline customers default to Claro's 21 — it's the historic Embratel code and still the most-dialed long-distance prefix in Brazil. If you're on a Vivo home plan with bundled international, 15 is the one. The carrier you pick determines the per-minute rate.

Vivo, Claro, and TIM Rates to the US

Brazilian carrier rates to the US in 2026 range from R$ 0.50 to R$ 3.99 per minute depending on carrier and plan. The catch is which carrier code you have to dial to get the cheap rate.

Carrier / Plan | Rate to US | At R$ 5/USD

Vivo prepaid / control standard | R$ 2.39 – 3.99/min | ~$0.48 – $0.80/min

Vivo Travel Voz pack (R$ 99.90 / 30 days for 50 min) | ~R$ 2.00/min effective | ~$0.40/min

Claro DDI standard (via CSP 21) | R$ 3.50/min | ~$0.70/min

Claro Ilimitado Mundo Total (R$ 60/month landline plan) | Unlimited to US + 34 countries | Subscription-only

TIM Plano LD 41 (via CSP 41) | R$ 0.50/min | ~$0.10/min

TIM without LD 41 plan | R$ 0.90 – 2.99/min | ~$0.18 – $0.60/min

WorldDialer (browser) | $0.04/min | R$ 0.10/min

TIM's R$ 0.50/min is the carrier price floor, but read the asterisk: you only get that rate if you're on the LD 41 plan AND you dial through carrier code 41. Forget either step, the call rates at R$ 2.99/min.

The Vivo Travel Voz package is the local pack-tax. Pre-pay R$ 99.90 for 50 minutes that expire in 30 days. Talk 20 minutes that month, you paid R$ 99.90 for R$ 40 of calls. Talk zero, you paid R$ 99.90 for nothing.

Claro's monthly Ilimitado Mundo Total at R$ 60 makes sense if you call the US several hours per month from a landline. Most occasional callers don't.

Do US Toll-Free Numbers Work from Brazil?

US 1-800 numbers will ring through from Brazil, but your Brazilian carrier bills the call at full international rates. The "toll-free" only applies inside the US.

This covers every US toll-free prefix: 1-800, 1-888, 1-877, 1-866, 1-855, 1-844, 1-833. Dial 00 21 1 800 xxx xxxx from a Claro landline (or +1 800 xxx xxxx from a cell), the call connects, and Vivo or Claro charges you R$ 2.99 to R$ 3.99 per minute. Some Brazilian mobile networks also surcharge or block US toll-free routing intermittently.

The fix: find the company's direct +1 (NXX) line. Every major US bank, the IRS, USCIS, and the SSA publish a non-toll-free number for international callers. Browser-based services like WorldDialer route those numbers without your Brazilian carrier in the loop.

US Phone Numbers You'll Actually Need from Brazil

These are the non-toll-free US numbers that route reliably from any Brazilian network. Bookmark them. The 1-800 versions will bill at international rates from Vivo, Claro, or TIM.

Institution | Number | Hours (US Eastern)

Chase Bank | +1 (713) 262-3300 | 24/7

Bank of America | +1 (315) 724-4022 | Mon-Fri 7 AM-10 PM, weekends 8 AM-5 PM

Citibank | +1 (210) 677-0065 | 24/7

IRS International | +1 (267) 941-1000 | Mon-Fri 6 AM-11 PM

USCIS International | +1 (212) 620-3418 | Mon-Fri 8 AM-8 PM

For Social Security, the Office of Earnings and International Operations answers at +1 (410) 965-0160, Mon-Fri 9 AM-4 PM ET. The IRS, SSA, and USCIS all publish these on .gov sites — they're built for calls from overseas. Calling US banks from abroad covers the wider bank list.

A 15-minute call to Chase, in R$ at the rates above:

Vivo prepaid standard: R$ 44.85 (~$8.97)
Claro DDI standard: R$ 52.50 (~$10.50)
TIM LD 41: R$ 7.50 (~$1.50)
WorldDialer: $0.60

Same Chase. Same 15 minutes. Different bills.

When to Call the US from Brazil

Brasília Time (BRT) is UTC-3 year-round — Brazil abolished daylight saving in 2019 and hasn't reinstated it. The US side still shifts twice a year, so during US daylight saving (roughly mid-March to early November), BRT is one hour ahead of US Eastern. The rest of the year, BRT is two hours ahead.

IRS opens 6 AM ET = 7 AM BRT during US DST (or 8 AM BRT during US standard time)
USCIS opens 8 AM ET = 9 AM BRT during US DST
US East Coast 9 AM-5 PM = 10 AM-6 PM BRT during US DST
US West Coast 9 AM-5 PM = 1 PM-9 PM BRT during US DST

São Paulo wakes up to a working IRS. That's a rare geographic perk — most of the world calls US institutions either pre-dawn or after midnight. From Brazil, you can call the IRS at the second they open with a coffee in hand, beat the queue, and be done before São Paulo's own business day starts.

Call US Numbers from Brazil

You have the format, the carrier codes, the rates, and the numbers. Time to dial.

WorldDialer works from Brazil. $0.04/min to US landlines. Browser-based, no app to install, no carrier code to memorize, no pack to burn through, no monthly subscription required.

Next time you need to call US, we'll be here.

→ Try WorldDialer

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