01848 Area Code
The dialling code for Thornhill: what 01848 numbers are, who holds them, and what to do about a call you don't recognise.
What Is the 01848 Area Code?
Thornhill landline number. 01848 is the dialling code for Thornhill. Numbers starting 01848 are landline numbers for that area. Internet phone services can use them too, so a caller is not necessarily in Thornhill.
Who was the range allocated to?
Ofcom has allocated 01848 numbers to 80 providers. The largest holders are BT, Digital Space Group Limited and (Aq) 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 01848 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 01848 Range
| Number type | Thornhill landline number |
|---|---|
| Area | Thornhill |
| Number format | 01848 XXXXXX |
| Allocated by Ofcom | 35% of the range, to 80 providers |
| First allocation on record | 15 July 1994 |
| Most recent allocation | 26 January 2026 |
Largest holders of 01848 numbers
| Provider (as allocated by Ofcom) | Share of range | First allocated |
|---|---|---|
| BT | 5% | 15 July 1994 |
| Digital Space Group Limited | 1% | 23 May 2008 |
| (Aq) Limited | 1% | 26 September 2012 |
| AQL Wholesale Ltd | 1% | 3 January 2008 |
| Andrews & Arnold (Numbers) Ltd | 1% | 2 April 2009 |
| Barritel Limited | 1% | 2 October 2006 |
74 more providers hold smaller blocks.
Allocation data: Ofcom numbering data, as published 28 October 2026.
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Common Questions About 01848 Numbers
Where is the 01848 area code?
01848 is the dialling code for Thornhill. Numbers starting 01848 are landline numbers for that area. Internet phone services can use them too, so a caller is not necessarily in Thornhill.
Is 01848 a mobile number?
No. 01848 is a landline (geographic) area code for Thornhill. UK mobile numbers start with 07.
Who does the 01848 range belong to?
Ofcom has allocated 01848 numbers to 80 providers. The largest holders are BT, Digital Space Group Limited and (Aq) 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 01848 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 01848 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.