01639 Area Code
The dialling code for Neath: what 01639 numbers are, who holds them, and what to do about a call you don't recognise.
What Is the 01639 Area Code?
Neath landline number. 01639 is the dialling code for Neath. Numbers starting 01639 are landline numbers for that area. Internet phone services can use them too, so a caller is not necessarily in Neath.
Who was the range allocated to?
Ofcom has allocated 01639 numbers to 93 providers. The largest holders are BT, Virgin Media Limited 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 01639 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 01639 Range
| Number type | Neath landline number |
|---|---|
| Area | Neath |
| Number format | 01639 XXXXXX |
| Allocated by Ofcom | 51% of the range, to 93 providers |
| First allocation on record | 15 July 1994 |
| Most recent allocation | 26 January 2026 |
Largest holders of 01639 numbers
| Provider (as allocated by Ofcom) | Share of range | First allocated |
|---|---|---|
| BT | 18% | 15 July 1994 |
| Virgin Media Limited | 5% | 15 July 1994 |
| GCI Network Solutions Limited | 2% | 2 May 2017 |
| Vodafone Ltd (C&W) | 2% | 9 September 2013 |
| Sky UK Limited | 1% | 1 July 2013 |
| (Aq) Limited | 1% | 12 September 2012 |
87 more providers hold smaller blocks.
Allocation data: Ofcom numbering data, as published 28 October 2026.
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Common Questions About 01639 Numbers
Where is the 01639 area code?
01639 is the dialling code for Neath. Numbers starting 01639 are landline numbers for that area. Internet phone services can use them too, so a caller is not necessarily in Neath.
Is 01639 a mobile number?
No. 01639 is a landline (geographic) area code for Neath. UK mobile numbers start with 07.
Who does the 01639 range belong to?
Ofcom has allocated 01639 numbers to 93 providers. The largest holders are BT, Virgin Media Limited 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 01639 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 01639 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.