- Prefix
01604 9- Area
- Northampton
- Number type
- Geographic landline (01/02)
- Format
01604 9XXXXX- From abroad
+44 1604 9XXXXX- Ofcom blocks in range
- 91
- Blocks in service
- 70
- Range holders
- 38
What are 01604 9XXXXX numbers?
Any UK number matching 01604 9XXXXX sits in the
01604 dialling code for Northampton.
Ofcom hands these numbers to communications providers in blocks; this range
contains 91 blocks, of which
70 are allocated and usable. Calls from these
numbers are typically homes and businesses in the Northampton area — or
organisations elsewhere that keep a local 01604 presence using
VoIP.
Who holds 01604 9… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| Gamma Telecom Holdings Limited | 13 | 01604 906XXX |
| Sky UK Limited | 10 | 01604 900XXX |
| TalkTalk Communications Limited | 9 | 01604 945XXX |
| Colt Technology Services | 2 | 01604 908XXX |
| TTNC Limited | 2 | 01604 930XXX |
| Voiceflex Limited | 2 | 01604 907XXX |
| Alnitak GmbH | 1 | 01604 971XXX |
| BT | 1 | 01604 953XXX |
| Calltracks Limited | 1 | 01604 976XXX |
| Commi Holdings Limited | 1 | 01604 927XXX |
| Content Guru Limited | 1 | 01604 966XXX |
| DIDWW Ireland Limited | 1 | 01604 986XXX |
…and 26 more providers hold smaller allocations in this range.
Ofcom’s data shows the provider each number range was originally allocated to — not who holds an individual number today. Numbers are frequently moved (ported) between providers, and no public database reveals the person or business behind a specific number, so treat any service that claims to with suspicion.
Not every block in this range is in service: of the 91 blocks Ofcom lists, 17 are protected (reserved by Ofcom and not in use) and 4 are free/unallocated. A call appearing to come from an unallocated block is a strong sign of a spoofed number.
Is a call from a 01604 9… number safe?
A local-looking number is never proof of who is calling: fraudsters spoof 01604 caller IDs so their calls look like they come from Northampton (‘neighbour spoofing’). If an unexpected caller asks for personal, banking or one-time-code details, hang up and ring the organisation back on a number you find independently. To put a name to a caller, see who called me?; to report one, see how to report a scam number.
Check a specific 01604 9XXXXX number
Paste any full number into the checker above (or on the main phone number checker) to see its exact range holder and allocation status from this week’s Ofcom data.
Run mobiles for a business? See our business mobile network comparison or get a quote.
More 01604 number ranges
Full 01604 Northampton area-code guide › · All UK area codes ›