Hi @Agnese Mosconi,
Thank you for reaching out regarding the transfer of your Skype number.
To proceed with your request and obtain details such as the CUPID or the underlying UK carrier, we kindly ask that you raise a support ticket through the appropriate channel that matches your support scope. This ensures your request is handled securely and efficiently by the right team.
Here is how you can submit a support ticket by visiting the https://admin.teams.microsoft.com/
Voice > Phone numbers > Create a new case
Once your ticket is submitted, our support team will be able to assist you further with the porting process.
I hope my information helpful for you!
Best Regards.
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.