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Through this service you can register or modify information regarding mobile and land line telephone numbers and email.
Individuals who have a Social Security affiliation number (NAF), regardless of the Scheme they belong to.
If you access with an electronic certificate, user+password or Cl@ve (permanent Cl@ve or Cl@ve PIN):
If you access via SMS:
To access this service check you have the necessary technical requirements.
Access to this service will only be enabled when you identify yourself as a natural person