- Prefix
028 3- Area
- Northern Ireland
- Number type
- Geographic landline (01/02)
- Format
028 3XXX XXXX- From abroad
+44 28 3XXX XXXX- Ofcom blocks in range
- 883
- Blocks in service
- 312
- Range holders
- 88
What are 028 3XXX XXXX numbers?
Any UK number matching 028 3XXX XXXX sits in the
028 dialling code for Northern Ireland.
Ofcom hands these numbers to communications providers in blocks; this range
contains 883 blocks, of which
312 are allocated and usable. Calls from these
numbers are typically homes and businesses in the Northern Ireland area — or
organisations elsewhere that keep a local 028 presence using
VoIP.
Who holds 028 3… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| BT | 40 | 028 3005 XXXX |
| GCI Network Solutions Limited | 32 | 028 3022 XXXX |
| Digital Space Group Limited | 8 | 028 3004 XXXX |
| Fuse 2 Communications Ltd | 6 | 028 3072 XXXX |
| TalkTalk Communications Limited | 6 | 028 3027 XXXX |
| Colt Technology Services | 4 | 028 3064 XXXX |
| Gamma Telecom Holdings Limited | 4 | 028 3044 XXXX |
| Virgin Media Limited | 4 | 028 3028 XXXX |
| Vodafone Ltd (C&W) | 4 | 028 3031 XXXX |
| 24 Seven Cloud Communications Ltd | 3 | 028 3046 8XXX |
| 8x8 Communications CX Solutions LIMITED | 3 | 028 3055 XXXX |
| API Telecom Limited | 3 | 028 3059 XXXX |
…and 76 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 883 blocks Ofcom lists, 548 are protected (reserved by Ofcom and not in use) and 23 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 028 3… number safe?
A local-looking number is never proof of who is calling: fraudsters spoof 028 caller IDs so their calls look like they come from Northern Ireland (‘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 028 3XXX XXXX 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 028 number ranges
Full 028 Northern Ireland area-code guide › · All UK area codes ›