Interested organisations are invited to submit suitable telephone numbers to a Do Not Originate list (“DNO List”) being compiled by ComReg. The following sections describe the background to and benefits of the DNO List. This infographic contains further information.
Many organisations use phone numbers that are only used for their clients or customers to contact them on e.g. for banking or public service helplines. These numbers are not used for making calls and are called “inbound-only” phone numbers.
In recent years, some inbound-only numbers have been “spoofed”, meaning that scammers have directed traffic to consumers pretending to come from these numbers. Consumers can be deceived or scammed as a result.
ComReg and the telecoms industry have discussed how to prevent scam voice calls in Ireland. One measure identified is the compilation and implementation of a DNO List.
The DNO List is a list of inbound-only numbers used by organisations and likely to be spoofed. Telecoms operators will block calls that present as numbers from the DNO List and so, scam calls on those numbers will cease.
ComReg compiles and maintains the DNO List. Organisations wishing to apply to add numbers to the DNO List should refer to the Guidance Note and Application Form.
ComReg assigns phone numbers to telecoms operators in Ireland.
Telecoms operators, in turn, provide these numbers to their customers (e.g. organisations and consumers) for their needs.
Some organisations widely publicise their inbound-only numbers to consumers e.g. in adverts, on bank cards. Consumers may therefore recognise these numbers and place a level of trust in them.
Scammers know and can exploit this by using technology to make calls appear to be from a number associated with a particular organisation. Consumers can unknowingly answer such calls and be scammed or inconvenienced as a result.
The following types of inbound-only numbers are suitable for the DNO List:
Some phone numbers are not suitable for the DNO List:
ComReg welcomes applications from organisations for numbers to add to the DNO list. Please note above the types of numbers most suitable for inclusion.
Organisations wishing to apply to add numbers to the DNO List should refer to the Guidance Note and Application Form
There is no fee to add or remove a number from the DNO List.
ComReg will not notify a DNO applicant if their number is to be included on the DNO List. However, if a DNO request is refused, ComReg will notify the applicant.
No, as operators implement the DNO at different times, there is no mechanism for notifying applicants when a number block is in place.
ComReg has a process to remove numbers from the DNO List. Please refer to the Guidance Note and Application Form
If you have any queries on the DNO List, please email email@example.com