Previous number held

[DJ07]

How do I find out a previous number I did have with 02. All I no is that it ended in 345. I need this number I had with 02 a few years ago 

[TallTrees]

Hello @DJ07 

It is unlikely that o2 customer services will be able to help you but you could ask. After a few years telephone numbers are reallocated.

Contact O2 customer services here 

Guide: How to find help & contact O2