- Prefix
01633 3- Area
- Newport
- Number type
- Geographic landline (01/02)
- Format
01633 3XXXXX- From abroad
+44 1633 3XXXXX- Ofcom blocks in range
- 73
- Blocks in service
- 50
- Range holders
- 34
What are 01633 3XXXXX numbers?
Any UK number matching 01633 3XXXXX sits in the
01633 dialling code for Newport.
Ofcom hands these numbers to communications providers in blocks; this range
contains 73 blocks, of which
50 are allocated and usable. Calls from these
numbers are typically homes and businesses in the Newport area — or
organisations elsewhere that keep a local 01633 presence using
VoIP.
Who holds 01633 3… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| Sky UK Limited | 9 | 01633 300XXX |
| Vodafone Ltd (C&W) | 7 | 01633 350XXX |
| DRD Communications Limited | 2 | 01633 360XXX |
| TalkTalk Communications Limited | 2 | 01633 370XXX |
| API Telecom Limited | 1 | 01633 325XXX |
| Aloha Telecommunications Ltd | 1 | 01633 305XXX |
| BT | 1 | 01633 357XXX |
| Bicom Systems EURL | 1 | 01633 324XXX |
| Colt Technology Services | 1 | 01633 373XXX |
| Commi Holdings Limited | 1 | 01633 389XXX |
| Content Guru Limited | 1 | 01633 379XXX |
| Datazero Ltd | 1 | 01633 377XXX |
…and 22 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 73 blocks Ofcom lists, 23 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 01633 3… number safe?
A local-looking number is never proof of who is calling: fraudsters spoof 01633 caller IDs so their calls look like they come from Newport (‘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 01633 3XXXXX 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.
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