Registering your alias directly with the CNMC

To send SMS and RCS to Spanish numbers, your alias has to be registered with the CNMC. You can do that registration through Instasent or submit it yourself directly at the CNMC's electronic office. This page describes the second case: registering on your own, without Instasent's help.

To do it, go to the process: https://sede.cnmc.gob.es/tramites/telecomunicaciones/gestion-del-registro-de-alias.

Sender Alias Registry management page with the Cl@ve access and electronic certificate access options — You access the process with Cl@ve or with an electronic certificate.

Once inside the process, the steps are as follows.

1. Applicant

State on whose behalf you are acting:

«En nombre propio» (in your own name) — if you sign in with the company's electronic certificate or with a certificate that already proves you can act on behalf of your company.
«En representación de» (on behalf of) — if you sign in with your personal certificate to submit the request on behalf of the company. This is the usual case if you work for the company but aren't the legal representative. Enter the company's tax ID (NIF) and registered name, plus its address.

Applicant section with «En representación de» selected and the details of the company that owns the alias — With «En representación de» (on behalf of) you enter the NIF and name of the company that owns the alias.

2. Request type

Select «Inscripción de Alias» (alias registration).

Request type «Inscripción de Alias» (alias registration). The notice reminds you which owner the request is for.

3. Brand owner's representative

Click «Añadir representante» (add representative) and enter the details of the company's legal representative: name, DNI/NIE, email and phone. Tick «Recibir notificaciones» (receive notifications).

Details of the brand owner's representative, with «Recibir notificaciones» (receive notifications) ticked.

4. Complete the alias details

Click «Añadir alias» (add alias) and enter:

The alias you use, that is, the sender of your messages.
Message type: SMS/MMS or RCS.
Activation date: select today's date.
The legitimate link, that is, why you're entitled to register that alias. Choose the option that best fits your case and, in the «Especificar cuál es» (Specify which) section, you can write a brief clarifying note.
Providers: Instasent Mobile Advertising SL.
Third parties (optional) — only if there's an intermediary between your company and Instasent. For example, a marketing agency or an SMS-sending software.

Alias details block: alias, message type, activation date, legitimate link and the provider Instasent Mobile Advertising, S.L. added — Alias details with the provider «Instasent Mobile Advertising, S.L.» added, and the «Revisar y presentar» (review and submit) button.

Click «Añadir Alias» (add alias) if you want to register several SMS and RCS senders in the same request.

Once you've entered all your aliases, click «Revisar y presentar» (review and submit). After the legal representative's authorisation, the request is left pending review by the CNMC.