- Prefix
01983 4- Area
- Isle of Wight
- Number type
- Geographic landline (01/02)
- Format
01983 4XXXXX- From abroad
+44 1983 4XXXXX- Ofcom blocks in range
- 28
- Blocks in service
- 24
- Range holders
- 24
What are 01983 4XXXXX numbers?
Any UK number matching 01983 4XXXXX sits in the
01983 dialling code for Isle of Wight.
Ofcom hands these numbers to communications providers in blocks; this range
contains 28 blocks, of which
24 are allocated and usable. Calls from these
numbers are typically homes and businesses in the Isle of Wight area — or
organisations elsewhere that keep a local 01983 presence using
VoIP.
Who holds 01983 4… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| (AQ) LIMITED | 1 | 01983 44XXXX |
| Andrews & Arnold (Numbers) Ltd | 1 | 01983 494XXX |
| BT | 1 | 01983 40XXXX |
| CFL Communications Ltd | 1 | 01983 498XXX |
| Digital Mail Limited | 1 | 01983 470XXX |
| Digital Space Group Limited | 1 | 01983 479XXX |
| IPV6 Limited | 1 | 01983 490XXX |
| Inet Telecoms Ltd (Voipfone) | 1 | 01983 475XXX |
| Invade International Ltd | 1 | 01983 493XXX |
| Localphone Limited | 1 | 01983 41XXXX |
| Lumen Technologies UK Limited | 1 | 01983 495XXX |
| Mars Communications Limited | 1 | 01983 491XXX |
…and 12 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 28 blocks Ofcom lists, 4 are protected (reserved by Ofcom and not in use). A call appearing to come from an unallocated block is a strong sign of a spoofed number.
Is a call from a 01983 4… number safe?
A local-looking number is never proof of who is calling: fraudsters spoof 01983 caller IDs so their calls look like they come from Isle of Wight (‘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 01983 4XXXXX 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 01983 number ranges
Full 01983 Isle of Wight area-code guide › · All UK area codes ›