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🇪🇸 Spanish Number Porting Guide

A step-by-step guide to porting your Spanish numbers to CloudTalk

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Written by Valeriia Volobrinskaia
Updated this week

Porting your Spanish number to CloudTalk is straightforward but requires thecorrect documentation and some planning. Below is a breakdown of requirements, timeframes, and costs based on the type of number.


Supported Number Types

  • Geographic (local) numbers (+348, +349)

  • Non-geographic numbers (+34901, +34902)

  • Toll-Free numbers (+34900, +34800)

Mobile numbers (+34 6) are not portable to VoIP operators. If you already have a mobile number you would like to use for outbound calls on CloudTalk, we can create a Virtual Caller ID of your existing number


Required Documents for Spanish Numbers

  1. Signed Letter of Authorization (LOA)

    - template will be provided by CloudTalk's Porting Team when you submit your request

    • LOA will ask for:

      • Full name of the authorized signatory

      • End user’s service address

      • Numbers to be ported

      • VAT number

    • Signature must match the name on the account/invoice

  2. Recent Invoice or Billing Document

    • Issued by the current provider

    • Dated within the past 30 days

    • Must show the number(s) to be ported and end user details

  3. CIF / NIF Number (Spanish Tax ID) for Spanish Business' local numbers

    • Required for Spanish porting cases

    • Must match the legal entity or individual listed on the invoice and LOA

    • Should be included on the LOA


    What is CIF / NIF?

    • NIF (Número de Identificación Fiscal): Used for individuals and legal entities in Spain. It typically matches the DNI (National Identity Document) number for Spanish citizens.

    • CIF (Código de Identificación Fiscal): Former tax ID format used for companies, now generally replaced by the NIF for legal entities, but still commonly referred to.

    How to Obtain a CIF / NIF:

    • Individuals: Provided by the Spanish Tax Agency (Agencia Tributaria) automatically when obtaining a DNI or NIE.

    • Businesses: Issued by the Agencia Tributaria upon company registration. Should appear on your business registration documents and invoices.

    Customers unsure of their CIF/NIF can retrieve it through their tax documents, invoices, or consult their accountant or legal representative.


Requirements for Number Hosting after the port

  • Local Numbers:

    • An address within the same area code is mandatory for hosting the number with our carrier

  • National / Toll-Free Numbers:

    • No address documentation required for hosting


Estimated Porting Timeline

All number types: 12-14 business days (subject to provider response times)


Step-by-Step Porting Process

  1. Submit a porting request to the CloudTalk Porting Team

  2. We review the request to check number portability and confirm next steps

  3. You complete and sign the LOA (Letter of Authorization)

  4. You send us the LOA and a recent invoice from your current provider

  5. CloudTalk submits the porting request to our partner carrier

  6. Our carrier forwards the request to your current telecom provider for approval

  7. If accepted, we’ll notify you of the confirmed porting date (usually 2- 4 business days in advance)

  8. If rejected, we’ll share the rejection reason and assist you in correcting the information for resubmission


Common Rejection Reasons (and How to Avoid Them)

  • Missing or incorrect CIF/NIF
    CIF (for companies) or NIF (for individuals) must be valid and correctly entered to match legal records.

  • LOA not signed or incomplete
    All fields must be filled out, and the document must be digitally signed by the correct person.

  • LOA signed by unauthorized person
    Only the legal account holder or authorized representative should sign the LOA.

  • Account details don’t match provider records
    Name, address, and number(s) must exactly match what your current provider has on file.

  • Invoice is older than 30 days
    Submit a recent invoice dated within the last 30 days.

  • Invoice doesn’t show the number(s)
    The invoice must list the exact number(s) you want to port.

  • Number is inactive or suspended
    The number must stay active throughout the porting process.

  • Outstanding balance with current provider
    Any unpaid bills can block the port. Clear any balance before submitting.

  • Address mismatch
    The address on the LOA must match your current provider’s records.

  • Number belongs to a non-portable range or block
    Some numbers are tied to a larger group that cannot be split. Check this with your current provider.

  • Porting blocked due to provider restrictions
    Some providers do not allow porting due to contract terms or internal policies.


On Porting Day

  • The number will be activated in CloudTalk

  • Your previous provider will release and deactivate the number

  • You’ll begin receiving inbound calls through CloudTalk

  • CloudTalk billing begins the same day


SMS Functionality

SMS is not supported on Spanish local, national, or toll-free numbers at this time.


Need Help?

Check out our detailed porting articles:

Or reach out to our Porting Team - we’re here to guide you every step of the way.


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