Colombia gives carriers until 2027 to flag suspicious and sales calls

Colombia gives carriers until 2027 to flag suspicious and sales calls

29 October 2026: Colombia's Comisión de Regulación de Comunicaciones (CRC) has moved the deadlines for the call warnings it ordered in Resolution CRC 8308 of 2026. Mobile operators had to start labelling sales calls between their own customers "Llamada con fines publicitarios" at the end of October. The fraud warning, "Alerta de llamada sospechosa", and the sales label on calls between different networks are now due by 31 January 2027, and calls from fixed lines by 30 April 2027.

Not yet independently verified. The release gives 30 October as the deadline for the same-network label in its list of dates and 31 October in its summary; we give both. We have not read the text of Resolution CRC 8396 itself. We will update this when it can be confirmed, and remove this note.

The rules themselves do not change. The regulator's release says the operators' obligations, the criteria for spotting suspicious calls and the technical requirements remain those set in July 2026. The new dates come from Resolution CRC 8396 of 2026.

The three dates

• 30 or 31 October 2026: the advertising label on calls between customers of the same mobile operator. The release lists 30 October as the deadline and says the label applies "from this Saturday, 31 October".
• 31 January 2027: the suspicious-call alert on all mobile-to-mobile calls, on the same network or across networks, and the advertising label between different mobile operators.
• 30 April 2027: both warnings on calls from fixed lines to mobiles.

"Each network has a firm date," said Felipe Augusto Díaz Suaza, the CRC's executive director. "Operators know what they have to do and when, and we are going to check every step."

What the caller sees, and who is labelled

The suspicious-call alert appears when the operator detects unusual behaviour on the calling number, such as many short, repeated calls in a short time. The CRC stresses that it does not confirm fraud. The advertising label appears when the call comes from a number that a company has registered for its commercial campaigns.

That second label is the one businesses control. Any company that runs outbound sales or collection campaigns in Colombia, in house or through a contact centre, needs its campaign numbers registered so its calls carry the advertising label rather than risk the suspicious-call alert. A dialler that rotates through many numbers to lift answer rates, making short repeated calls, fits the pattern the fraud alert is built to catch.

A fraud bill that tripled in two years

The CRC puts claims for fraud through calls and text messages at more than 252 million pesos a day. Between 2022 and 2024 the value of claims tripled, from 30,622 million to 92,235 million pesos. The release points to caller-origin checks in the United States, the United Kingdom and parts of the European Union as the models.

Our telemarketing software category lists six products and call center software six more.

Related on TrustList:

• Brazil rewrites its SAC customer service rules and orders call signing

Sources

• CRC: CRC ajusta plazos para la implementación gradual de alertas en llamadas sospechosas y publicitarias (press release), 29 October 2026