Multi-line ports

If multiple numbers are currently in use with the end user's current provider, it may be possible to only port some of these numbers if the end user no longer needs all of them. The scenarios can be found below:

• If the main billing number (MBN) is being ported, any associated numbers must be ported as well or ceased with the current provider after the port has been completed.
• If the MBN is not being ported, any associated numbers may be ported on their own, remain with the current provider (CP), or be ceased. If the order contains a DDI range (a sequential block of numbers), the entire block must be ported or ceased as appropriate. It is not possible to only port some numbers within the block*.

These numbers, however, cannot be allocated to another end user and must be ported away in full if the end user chooses to do this in future.

Mixed Range Holder ports

There may be a case where you're porting numbers for the same customer, that have been allocated via different Range Holders. A Range Holder is the communications provider that Ofcom originally allocated a certain area code and prefix to.

For example, one of Dial 9's 01202 ranges is 01202 030.

When dealing with different range holders, separate port orders must be created as we would be contacting different parties to make the arrangements.

Although all numbers might now reside on the same network, the original Range Holder will still be responsible for the onward routing of calls, therefore they must be contacted as part of the port request. This type of port is known as a Subsequent Port or SUP.

As such, a separate LoA will need to be created for each Range Holder, and you will need to specify the current network host to Dial 9 when contacting us to start the process.