- Prefix
07523- Number type
- Mobile
- Format
07523 XXXXXX- From abroad
+44 7523 XXXXXX- Ofcom blocks in range
- 10
- Blocks in service
- 10
- Range holders
- 1
What are 07523 numbers?
Numbers starting 07523 are UK mobile
numbers under Ofcom’s
07 mobile numbers range.
Charged at your standard mobile rate and included in inclusive minutes.
Which network do 07523 numbers belong to?
| Range | Range holder (allocated by Ofcom) | Status |
|---|---|---|
07523 0XXXXX | Telefonica UK Limited | Allocated |
07523 1XXXXX | Telefonica UK Limited | Allocated |
07523 2XXXXX | Telefonica UK Limited | Allocated |
07523 3XXXXX | Telefonica UK Limited | Allocated |
07523 4XXXXX | Telefonica UK Limited | Allocated |
07523 5XXXXX | Telefonica UK Limited | Allocated |
07523 6XXXXX | Telefonica UK Limited | Allocated |
07523 7XXXXX | Telefonica UK Limited | Allocated |
07523 8XXXXX | Telefonica UK Limited | Allocated |
07523 9XXXXX | Telefonica UK Limited | Allocated |
Ofcom’s weekly data shows which network each 07523 range was originally allocated to — the table above. Bear in mind UK mobile numbers are very frequently ported, so the person calling you may be on a different network today; the allocation is a starting point, not proof.
Had a call or text from an 07523 number?
Unexpected calls and texts from unfamiliar mobile numbers are a common scam pattern — missed-call (‘Wangiri’) baiting, fake delivery texts and bank-impersonation calls all use them. Don’t ring back numbers you don’t recognise without checking first. Our plain-English guide covers what to do: Who called me from a +44 7 mobile number?
Check a specific 07523 number
Paste the full number into the checker above to see its range holder and allocation status from this week’s Ofcom data — free, no sign-up.
Run mobiles for a business? See our business mobile network comparison (EE vs Vodafone vs O2), or get a free business mobile quote — we compare the networks for your team, no obligation.