List of known blocking codes for phone number porting (in the Netherlands)

Phone porting orders can receive blocking codes that are send from the current service provides in the Netherlands. See the list of known blocking codes and the required action that can be taken by the user.

•  Blocking code 1: Invalid dossier ID is used.
  • User action: Please create a ticket in help desk.
• Blocking code 2: Another ongoing porting is already in progress.
  • User action: Please check with the current donor.
• Blocking code 22: Name, address and telephone combination do not lead to one subscriber.
  • User action: Please check with the current donor to obtain the correct information.
• Blocking code 27: Customer ID and telephone number do not lead to one subscriber.
  • User action: Please create a ticket in help desk.
• Blocking code 41: Multiple different number types not allowed.
  • User action: Please create separate porting orders.
• Blocking code 44: Multiple donor providers not allowed.
  • User action: Please create separate porting orders.
• Blocking code 45: Telephone number is not in use.
  • User action: Please check the number.
• Blocking code 63: Porting not possible within the porting request period (till 120 days in the future).
  • User action: The customer has a contract that runs longer than 120 days in the future. Ask the customer if it is possible to end his current contract sooner or wait with a new porting request.​
• Blocking code 99: Other reason
  • User action: Please create a ticket in help desk.  

​