- Prefix
01638 8- Area
- Newmarket
- Number type
- Geographic landline (01/02)
- Format
01638 8XXXXX- From abroad
+44 1638 8XXXXX- Ofcom blocks in range
- 100
- Blocks in service
- 10
- Range holders
- 8
What are 01638 8XXXXX numbers?
Any UK number matching 01638 8XXXXX sits in the
01638 dialling code for Newmarket.
Ofcom hands these numbers to communications providers in blocks; this range
contains 100 blocks, of which
10 are allocated and usable. Calls from these
numbers are typically homes and businesses in the Newmarket area — or
organisations elsewhere that keep a local 01638 presence using
VoIP.
Who holds 01638 8… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| Sky UK Limited | 3 | 01638 802XXX |
| Content Guru Limited | 1 | 01638 812XXX |
| Hello Telecom (UK) Limited | 1 | 01638 811XXX |
| Kalnet4U Ltd | 1 | 01638 814XXX |
| Minotaur Telecom Limited | 1 | 01638 813XXX |
| Redwood Technologies Ltd | 1 | 01638 816XXX |
| Truespeed Communications Ltd | 1 | 01638 801XXX |
| XoverX Ltd | 1 | 01638 819XXX |
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 100 blocks Ofcom lists, 82 are protected (reserved by Ofcom and not in use) and 8 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 01638 8… number safe?
A local-looking number is never proof of who is calling: fraudsters spoof 01638 caller IDs so their calls look like they come from Newmarket (‘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 01638 8XXXXX 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 01638 number ranges
Full 01638 Newmarket area-code guide › · All UK area codes ›