How to Scrub a Calling List on REPEP, No Llame, RNE

DNC LATAM · Compliance guides

Updated 23 September 2026

Step 1: tag every row with one destination. +52 is Mexico REPEP (PROFECO). +54 is Argentina's Registro Nacional No Llame (AAIP). +57 is Colombia RNE (CRC). Step 2: normalize the phone column. Step 3: scrub against that official registry. Step 4: block every hit before anyone dials. A US National DNC wash is not that check. API or CSV. From $500/mo per country. Get access. API.

This is the evergreen workflow. The Mexico-only CSV walkthrough stays on the Mexico blog post. Product mechanics: DNC scrubbing explained.

Step 1: Tag the destination, not the floor

Split the file by country code before it reaches the dialer. +52 is Mexico. +54 is Argentina. +57 is Colombia. +1 stays on your US vendor. Agent location is the wrong tag. A Bogotá seat dialing Mexico still needs REPEP.

Do not build one "LATAM" suppression file. The three registries do not share a release, an operator, or a result. Comparison: Mexico vs Argentina vs Colombia.

Step 2: Export a clean phone column

One CSV or one API array. Dedicated phone field. No names mixed into the number. Strip duplicate rows first. A duplicate that survives the scrub gets dialed twice even if the first row was correctly cleared. Invalid inputs still count against the monthly allowance.

Step 3: Normalize every number

Registries match on a consistent representation. A CRM value of 55 1234 5678 and a registry value of +525512345678 are the same line. A naive string compare will miss the match and let a registered number through. Pick one canonical form (E.164 is the safe default) and rewrite every entry before the check. Mexican mobiles often appear with or without a leftover leading 1 and with or without +52. Fix that once, centrally.

Step 4: Choose API or panel CSV

Same official source. Same country quota. Same dated screening record. CSV is not a public batch API. Decision page: DNC API vs CSV.

Step 5: Check the current official data

• Mexico. Current REPEP release. Official data every 15 days, zone by zone. Never older than one cycle. REPEP explainer.
• Argentina. Current No Llame download or consult before the campaign. No Llame explainer.
• Colombia. Current RNE query before launch. RNE explainer.

Send country: "mx", "ar", or "co" with the phone array. You get prohibited numbers (do not call), safe numbers (not on that registry at check time), and invalid numbers with a reason.

Step 6: Suppress, then honor opt-outs

Remove or block every prohibited number in the dialer. Logging a flag that a human might read later is not a control. Honor a direct "stop calling" immediately, even if the number is not on the registry that day. Consent overrides, where counsel says they apply, live in a separate system. The scrub does not store your consent files.

Step 7: Keep the screening record with the result

Every operational check produces a dated screening record: country, registry context or release, counts. No phone numbers. File it with the Scrub Result you retain. Auditors ask for a named campaign, not a process paragraph. What the record contains. What auditors ask.

When to buy the API

Buy when this workflow is weekly or continuous, or when a CSV export cannot see numbers added after the file left the CRM. From $500/month per country at 10,000 checks. Independent SKUs. Annual billing charges ten months for twelve. Batch vs live gates: batch vs realtime DNC checks. Cost: DNC scrubbing cost.