01228 Area Code
The dialling code for Carlisle: what 01228 numbers are, who holds them, and what to do about a call you don't recognise.
What Is the 01228 Area Code?
Carlisle landline number. 01228 is the dialling code for Carlisle. Numbers starting 01228 are landline numbers for that area. Internet phone services can use them too, so a caller is not necessarily in Carlisle.
Who was the range allocated to?
Ofcom has allocated 01228 numbers to 110 providers. The largest holders are BT, Vodafone Ltd (C&W) and Flextel 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 01228 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 01228 Range
| Number type | Carlisle landline number |
|---|---|
| Area | Carlisle |
| Number format | 01228 XXXXXX |
| Allocated by Ofcom | 55% of the range, to 110 providers |
| First allocation on record | 15 July 1994 |
| Most recent allocation | 17 March 2026 |
Largest holders of 01228 numbers
| Provider (as allocated by Ofcom) | Share of range | First allocated |
|---|---|---|
| BT | 19% | 15 July 1994 |
| Vodafone Ltd (C&W) | 4% | 30 July 2013 |
| Flextel Limited | 2% | 17 June 2005 |
| Gamma Telecom Holdings Limited | 2% | 15 November 2012 |
| TalkTalk Communications Limited | 2% | 31 August 2011 |
| GCI Network Solutions Limited | 2% | 20 April 2017 |
104 more providers hold smaller blocks.
Allocation data: Ofcom numbering data, as published 28 October 2026.
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Common Questions About 01228 Numbers
Where is the 01228 area code?
01228 is the dialling code for Carlisle. Numbers starting 01228 are landline numbers for that area. Internet phone services can use them too, so a caller is not necessarily in Carlisle.
Is 01228 a mobile number?
No. 01228 is a landline (geographic) area code for Carlisle. UK mobile numbers start with 07.
Who does the 01228 range belong to?
Ofcom has allocated 01228 numbers to 110 providers. The largest holders are BT, Vodafone Ltd (C&W) and Flextel 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 01228 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 01228 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.