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SMS API in Argentina 2026: The No Llame Registry and AAIP

Argentina makes you check a national Do-Not-Call registry before every marketing SMS, honor opt-outs within 24 hours, and face fines up to ARS 50 million. Consent plus registry, strictly enforced. Here's how.

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smsroute editorial team · Last reviewed · 4 min read
$0.029/msg to Argentina from 106ms median 97.7% delivered
SMS API in Argentina 2026: The No Llame Registry and AAIP — smsroute
$0.029
per SMS to Argentina
3 direct
Claro · Movistar · Personal
106 ms
median submission
97.7%
delivered success
An SMS API in Argentina runs into a national Do-Not-Call registry with teeth. Argentina's Registro Nacional No Llame, managed by AAIP under Law 26.951, lets citizens block marketing contact, and businesses must check it before sending marketing SMS, per AAIP. On top of that, data protection runs under Law 25.326, opt-outs must be honored within 24 hours, and you update your contact lists monthly. And the penalties are real: AAIP Resolution 126/2024 unified sanctions into three tiers, with fines reaching ARS 50 million for the most serious violations. So Argentina is a consent-plus-registry market where the registry check is mandatory and the fines are steep.
On this page
  1. Check the registry, or pay up to ARS 50 million
  2. The Argentine rules
  3. Sending compliantly in Argentina
  4. Sending to Argentina in practice

Check the registry, or pay up to ARS 50 million

An SMS API in Argentina runs into a national Do-Not-Call registry with teeth. Argentina's Registro Nacional No Llame, managed by AAIP under Law 26.951, lets citizens block marketing contact, and businesses must check it before sending marketing SMS, per AAIP. On top of that, data protection runs under Law 25.326, opt-outs must be honored within 24 hours, and you update your contact lists monthly. And the penalties are real: AAIP Resolution 126/2024 unified sanctions into three tiers, with fines reaching ARS 50 million for the most serious violations. A business can check the registry by uploading a CSV of phone numbers to the AAIP portal or calling an API endpoint, with results typically returned within minutes.

Here's what the No Llame registry and Argentina's data law require, and how to send compliantly. SMSRoute's published route pages for Argentina list direct-carrier delivery via Claro, Movistar, Personal from $0.029/message, with 106ms median submission and 97.7% delivered success (smsroute.cc route pages, 2026). Delivered success measures messages that reached the carrier network, excluding those blocked by carrier filtering or sent to invalid numbers. These stats are calculated from SMSRoute's internal delivery logs over the trailing 30 days.

The Argentine rules

The Argentine rules — comparison diagram
Requirement Detail
No Llame registry Check before marketing (Law 26.951, AAIP)
Data protection Law 25.326 (habeas data)
Regulators ENACOM (telecom) + AAIP (data)
Opt-out Honor within 24 hours
List updates Refresh against the registry monthly
Fines Up to ARS 50M (3 tiers, Resolution 126/2024)

The Registro Nacional No Llame is the defining feature. Citizens register to block marketing, and you must scrub against it before campaigns. Registered numbers are off-limits, a 30-day waiting period applies before they can file complaints, and monthly list refreshes are required. Data protection sits under Law 25.326 (Argentina's long-standing habeas data law), with AAIP enforcing and ENACOM overseeing telecom. Opt-outs must be honored within 24 hours. And the June 2024 sanctions unification (Resolution 126/2024) set three violation tiers with fines up to ARS 50 million — so non-compliance is expensive. Like Brazil and Italy, Argentina treats consent as an ongoing obligation, not a signup checkbox.

Sending compliantly in Argentina

  1. Scrub against the No Llame registryCheck the Registro Nacional No Llame before each marketing campaign, and refresh your lists against it monthly. Registered numbers are off-limits.
  2. Comply with Law 25.326Handle personal data and consent under Argentina's data-protection law, enforced by AAIP. Document consent and minimise data — the data-minimisation discipline applies.
  3. Honor opt-outs within 24 hoursSuppress opt-out requests within a day, per the rules — faster than many markets. Wire it into your opt-out handling.
  4. Separate transactional from marketingOTPs and transactional messages rest on the relationship; the No Llame registry and consent rules bite on marketing — the transactional carve-out applies.

The monthly-refresh requirement is the operational catch. The No Llame registry isn't a one-time check — you must update your lists against it monthly, because people join continuously. Combined with 24-hour opt-out handling and active suppression-list hygiene, that monthly refresh is what keeps a campaign compliant instead of just launched.

Sending to Argentina in practice

SMSRoute is a no-KYC SMS API with crypto billing (BTC, ETH, USDT, XMR, LTC, and SOL) serving the international route to Argentina, with live pricing on the send SMS to Argentina page. For transactional and OTP traffic resting on the relationship, the international route delivers to Argentine users. Argentina's economy has high crypto adoption, so crypto billing fits the market context.

The honest framing: the No Llame scrub, Law 25.326 consent, and 24-hour opt-out are yours to run whatever provider you use; we deliver the messages your compliant process approves. Scrub the No Llame registry monthly, comply with the data law, honor opt-outs within 24 hours, and Argentina delivers.

BrazilBlog article
ItalyBlog article

FAQ

What is the No Llame registry in Argentina?
The Registro Nacional No Llame is Argentina's national Do-Not-Call registry, managed by AAIP under Law 26.951, where citizens block unwanted marketing contact. Businesses must check it before sending marketing SMS and refresh their lists against it monthly, since registered numbers are off-limits and people join the registry continuously.
What are the penalties for SMS violations in Argentina?
Steep. AAIP Resolution 126/2024 (effective June 2024) unified the sanctions regime into three tiers — minor, serious, and very serious infractions — with fines reaching up to ARS 50 million for the most serious violations. Combined with the mandatory No Llame registry check and 24-hour opt-out requirement, Argentina enforces its rules firmly.
How quickly must I honor SMS opt-outs in Argentina?
Within 24 hours — faster than many markets. You must suppress opt-out requests within a day, and separately refresh your contact lists against the No Llame do-not-call registry monthly. This combination rewards an automated, continuous suppression process rather than manual per-campaign checks.
What data protection law governs SMS in Argentina?
Law 25.326, Argentina's Personal Data Protection Law (habeas data), enforced by AAIP (Agencia de Acceso a la Información Pública). ENACOM oversees telecom infrastructure. Together with the Law 26.951 No Llame registry, they require consent, registry scrubbing, and prompt opt-out for marketing SMS, with the sanctions unified under Resolution 126/2024.

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