Sending SMS to Spain? See Telnyx guidance and requirements Learn more about Spain: SMS Guidelines with Telnyx.
Updated today
Spain: SMS Guidelines
MCC: 214 Dial Code: 34 Spain's telecoms regulator, the CNMC, is rolling out a new Alias Registry as part of Circular 1/2026. Starting September 15**, 2026**, any alphanumeric Sender ID — that's the brand name people see instead of a phone number when they receive an SMS — must be registered before it can be used to send messages to Spanish numbers (+34). Information on Alphanumeric Sender ID registration: Please provide the details below to alpha_sender_id@telnyx.com: Your company details — Full legal company name — Your NIF/CIF (Spanish tax ID for companies) or EU-VAT number if you're based outside Spain — Registered company address
- Legal representative — Full name — NIF or passport number — Mobile number and email address
- Sender ID details (one set per alias) — The exact alias as it appears in your messages (e.g. MYBRAND) — What you use it for (transactional, OTP, marketing, etc.) — Planned start and end date — note that registrations are valid for a maximum of 24 months
- Proof of ownership — one of the following per alias: — Trademark or trade name → certificate from OEPM (Spain) or EUIPO (EU) — Company name → certificate from the Spanish Mercantile Registry — Domain name → proof of ownership of a .es or ICANN-registered domain that matches the alias
Please make sure to always refer to our Acceptable Use Policy for Messaging.