This guide outlines the supported number types, required documents, hosting rules, and porting timelines for Spanish numbers.

Initial Overview

1. Supported Number Types

⚠️ Mobile numbers (+34 6xx) are not portable.

You can request number porting using the International Porting Form.

Looking to port numbers from other countries? See Global Porting Coverage.

You’ll need to submit a signed Letter of Authorization (LOA) - Provided as a .zip file at the end of this guide.

(Other document requirements listed below.)

⚠️ Timelines may vary if submitted details do not match your current provider’s records.

LOA template (.zip) is attached at the bottom of this guide.

Signed LOA (must include CIF/NIF)
Recent invoice (dated within the last 30 days, showing number and end user details)
CIF/NIF (Spanish Tax ID) must match the legal entity on the invoice and LOA

Hosting requirement: Address must be within the same area code as the number

Signed LOA
Recent invoice (dated within the last 30 days, showing number and end user details)

Submit Your Porting Request
Send your request to the CloudTalk Porting Team to begin the process.
Initial Review
Cloudtalk team'll verify number portability and confirm the next steps.
Documentation Collection
Complete and sign the LOA (Letter of Authorization), and provide a recent invoice from your current telecom provider.
Submission to Carrier
CloudTalk submits your request to our partner carrier, who then forwards it to your current provider.
Approval or Rejection
- If approved, Cloudtalk team will confirm the porting date (typically 2–4 business days in advance).
- If rejected, Cloudtalk team will share the reason and guide you on how to correct and resubmit the request.

Issue	How to Fix
Missing or incorrect CIF/NIF	Ensure the company’s CIF or individual’s NIF is valid and matches official legal records
LOA not signed or incomplete	Fill out all fields and make sure the LOA is digitally signed by the correct person
LOA signed by unauthorized person	Only the legal account holder or an authorized representative should sign the LOA
Account details don’t match provider records	Double-check name, address, and number(s) against your current provider’s records
Invoice is older than 30 days	Provide a recent invoice dated within the last 30 days
Invoice doesn’t show the number(s)	Use a billing document that clearly lists the number(s) you want to port
Number is inactive or suspended	The number must remain active throughout the porting process
Outstanding balance with current provider	Settle any unpaid bills with your provider before submitting your port request
Address mismatch	The address on the LOA must match the address your provider has on file
Number belongs to a non-portable range/block	Some number blocks can’t be split -confirm with your provider before submitting the request
Porting blocked due to provider restrictions	Some providers restrict porting due to contract terms or internal policies - confirm before starting