hellou Connect · Calling · SIP Trunk

✦ Twilio Alternative for LATAM

Calls they actually pick up.

Local numbers across LATAM, the US, and Europe. Verified Caller ID and outbound calling via API. Answer rates up to 4× higher.

How it works

The numbers game

Generic US number

+1 (555) 123-4567

SPAM filter: 85% caught

Local fixed line (Bogotá)

+57 (601) 234-5678

Answer rate: 25–35%

Local mobile (Verified)

+57 (312) 345-6789

Answer rate: 35–40% (branded)

Features

What you get

Local DID Numbers

Fixed and mobile numbers in 30 countries. Callers see a local number, not an international one.

Outbound Calling

Dial all 30 countries with verified Caller ID. Up to 4× higher answer rates vs. generic numbers.

Verified Caller ID · No SPAM

Registered with local carriers. Your calls are not flagged as SPAM.

Inbound SIP Trunk

30 countries, thousands of cities

Local DID numbers and verified outbound calling across the same markets.

Local DID numbers

🇨🇴

Colombia 104 cities · View all Fixed + Mobile

🇺🇸

United States 3000 cities

🇦🇷

Argentina 8 cities · View all

🇧🇪

Belgium 40 cities · View all Geographic + Mobile

🇧🇿

Belize 2 cities

🇧🇴

Bolivia 4 cities

🇧🇷

Brazil 90 cities · View all Geographic + Mobile

🇨🇦

Canada 500 cities

🇨🇱

Chile 21 cities · View all

🇨🇷

Costa Rica 4 cities

🇩🇴

Dominican Republic 7 cities · View all

🇪🇨

Ecuador 3 cities

🇸🇻

El Salvador 1 city · View all

🇫🇷

France 5 cities

🇩🇪

Germany 420 cities Geographic + National

🇬🇹

Guatemala 3 cities

🇭🇹

Haiti 2 cities

🇭🇳

Honduras 2 cities

🇮🇹

Italy 5 cities

🇯🇲

Jamaica 2 cities

🇱🇹

Lithuania 47 cities · View all

🇲🇽

Mexico 125 cities

🇳🇱

Netherlands 4 cities

🇳🇮

Nicaragua 3 cities

🇵🇦

Panama 9 cities · View all

🇵🇾

Paraguay 3 cities

🇵🇪

Peru 5 cities · View all

🇪🇸

Spain 5 cities

🇺🇾

Uruguay 3 cities

🇻🇪

Venezuela 4 cities

Outbound SIP Trunk

27 countries for outbound calling

Place calls with a verified local Caller ID across LATAM, the US, and Europe via SIP Trunk.

Outbound calling

🇦🇷 Argentina

🇧🇪 Belgium

🇧🇿 Belize

🇧🇴 Bolivia

🇧🇷 Brazil

🇨🇱 Chile

🇨🇷 Costa Rica

🇩🇴 Dominican Republic

🇪🇨 Ecuador

🇸🇻 El Salvador

🇫🇷 France

🇩🇪 Germany

🇬🇹 Guatemala

🇭🇹 Haiti

🇭🇳 Honduras

🇮🇹 Italy

🇯🇲 Jamaica

🇲🇽 Mexico

🇳🇱 Netherlands

🇳🇮 Nicaragua

🇵🇦 Panama

🇵🇾 Paraguay

🇵🇪 Peru

🇪🇸 Spain

🇺🇾 Uruguay

🇺🇸 United States

🇻🇪 Venezuela

Developer API

Provision & place calls in minutes

POST /v1/numbers/provision

// Provision a local number
curl -X POST https://api.hellou.ai/v1/numbers/provision \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{country": "CO", "type": "mobile"}'

200 OK

// Response
{
  "number": "+57 312 345 6789",
  "type": "mobile",
  "country": "CO",
  "verified": true
}

POST /v1/calls/outbound

// Place an outbound call
curl -X POST https://api.hellou.ai/v1/calls/outbound \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{from":"+57312345789","to":"+573131234567","text":"Hi..."}'

202 Accepted

// Response
{
  "call_id": "call_a1b2c3d4",
  "from": "+57 312 345 6789",
  "to": "+57 313 123 4567",
  "status": "queued"
}

FAQ

Questions about calling?

Is hellou a Twilio alternative?

Yes. Like Twilio, we offer REST APIs for outbound calling and number provisioning. But we focus exclusively on Latin America, with local numbers in 30 countries, verified Caller ID (which prevents SPAM filters), and built-in support for the region's regulatory environment.

What countries have local numbers?

We support local DID numbers in 30 countries: Colombia, Mexico, Brazil, Argentina, Chile, Peru, Panama, Dominican Republic, El Salvador, United States, Canada, Germany, Belgium, and Lithuania. Exact availability by city is confirmed on the discovery call.

How do I integrate calling into my app?

Our REST API is simple: POST to /v1/numbers/provision to get a local number, then POST to /v1/calls/outbound to place a call. Our docs include SDK examples in Node.js, Python, and Go.

What are answer rates like compared to SPAM calls?

Calls from unverified or generic numbers see answer rates of 5-15%. Local verified numbers in LATAM see answer rates of 20-40%, and branded numbers can reach 40-60%. Your mileage varies by industry and audience.

Twilio Disclaimer: hellou Connect is not affiliated with, endorsed by, or a subsidiary of Twilio Inc. Twilio is a registered trademark of Twilio Inc. We offer similar REST API services for voice communications in Latin America, with a focus on local numbers, verified Caller ID, and regional compliance.