O2 UK Phone Number Lookup
Identify any O2 UK number in seconds.
About O2 UK
Once known as BT Cellnet, O2 became Telefónica's UK arm and then merged with Virgin Media. Strong in London and the South East — their headquarters in Slough is on the same campus as their famous Greenwich arena.
Which numbers belong to O2 UK?
O2 numbers historically used 07710 to 07999 blocks. After the VMED02 merger creating VirginMedia O2, the carrier expanded across more of the 07-range.
Common O2 UK number scams
O2 customers should beware of fake "Priority Tickets" SMS that mimic the real O2 Priority app. Genuine O2 messages never include shortened bit.ly-style links.
Frequently asked questions
How do I know if a number belongs to O2 UK? ▼
Type the number into the search box above. Our database queries the official carrier registry — if the number is or used to be on O2 UK, you'll see it in under five seconds.
Can I find the owner of a O2 UK number? ▼
Yes, provided the data is publicly available. Our detailed report cross-references public records, social profiles and community spam-report databases to give you a full picture.