01525 Area Code
The dialling code for Leighton Buzzard: what 01525 numbers are, who holds them, and what to do about a call you don't recognise.
What Is the 01525 Area Code?
Leighton Buzzard landline number. 01525 is the dialling code for Leighton Buzzard. Numbers starting 01525 are landline numbers for that area. Internet phone services can use them too, so a caller is not necessarily in Leighton Buzzard.
Who was the range allocated to?
Ofcom has allocated 01525 numbers to 91 providers. The largest holders are BT, Vodafone Ltd (C&W) and GCI Network Solutions Limited.
Numbers can be moved (ported) between networks, so the network a caller uses today may not be the one Ofcom allocated the block to. The allocation does not identify the person or business using a number.
Had a call from a 01525 number you don't recognise?
We can't tell you who called: an area code only shows the type of number and the provider Ofcom allocated the range to.
- Don't call back in a hurry, even if a message says it's urgent. Never give bank details or security codes on a call you didn't expect.
- Block the number from your phone's recent calls list.
- Forward scam texts free to 7726. Report unwanted marketing calls to the ICO, and see Ofcom's advice on scam calls.
- Register your number with the Telephone Preference Service to opt out of sales calls.
About the 01525 Range
| Number type | Leighton Buzzard landline number |
|---|---|
| Area | Leighton Buzzard |
| Number format | 01525 XXXXXX |
| Allocated by Ofcom | 51% of the range, to 91 providers |
| First allocation on record | 15 July 1994 |
| Most recent allocation | 26 January 2026 |
Largest holders of 01525 numbers
| Provider (as allocated by Ofcom) | Share of range | First allocated |
|---|---|---|
| BT | 18% | 15 July 1994 |
| Vodafone Ltd (C&W) | 3% | 5 September 2013 |
| GCI Network Solutions Limited | 2% | 2 May 2017 |
| Virgin Media Limited | 2% | 15 July 1994 |
| Gamma Telecom Holdings Limited | 1% | 22 February 2005 |
| (Aq) Limited | 1% | 19 October 2011 |
85 more providers hold smaller blocks.
Allocation data: Ofcom numbering data, as published 28 October 2026.
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Common Questions About 01525 Numbers
Where is the 01525 area code?
01525 is the dialling code for Leighton Buzzard. Numbers starting 01525 are landline numbers for that area. Internet phone services can use them too, so a caller is not necessarily in Leighton Buzzard.
Is 01525 a mobile number?
No. 01525 is a landline (geographic) area code for Leighton Buzzard. UK mobile numbers start with 07.
Who does the 01525 range belong to?
Ofcom has allocated 01525 numbers to 91 providers. The largest holders are BT, Vodafone Ltd (C&W) and GCI Network Solutions Limited. Numbers can be moved (ported) between networks, so the network a caller uses today may not be the one Ofcom allocated the block to. The allocation does not identify the person or business using a number.
Who called me from a 01525 number?
We can't tell you who called. An area code only shows the type of number and which provider Ofcom allocated the range to. If you don't recognise a 01525 number, don't call back in a hurry, and never give out bank details or security codes on a call you didn't expect.
Block the number from your phone's recent calls list. Forward scam texts free to 7726, report unwanted marketing calls to the ICO, and see Ofcom's advice on scam calls.