- Prefix
01821 4- Area
- Kinrossie
- Number type
- Geographic landline (01/02)
- Format
01821 4XXXXX- From abroad
+44 1821 4XXXXX- Ofcom blocks in range
- 37
- Blocks in service
- 24
- Range holders
- 23
What are 01821 4XXXXX numbers?
Any UK number matching 01821 4XXXXX sits in the
01821 dialling code for Kinrossie.
Ofcom hands these numbers to communications providers in blocks; this range
contains 37 blocks, of which
24 are allocated and usable. Calls from these
numbers are typically homes and businesses in the Kinrossie area — or
organisations elsewhere that keep a local 01821 presence using
VoIP.
Who holds 01821 4… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| TalkTalk Communications Limited | 2 | 01821 428XXX |
| (AQ) LIMITED | 1 | 01821 46XXXX |
| API Telecom Limited | 1 | 01821 453XXX |
| AQL Wholesale Ltd | 1 | 01821 47XXXX |
| Barritel Limited | 1 | 01821 40XXXX |
| Bicom Systems EURL | 1 | 01821 449XXX |
| Content Guru Limited | 1 | 01821 458XXX |
| Convergence Group (wireless) Networks Limited | 1 | 01821 445XXX |
| Digitech Solutions Global Limited | 1 | 01821 450XXX |
| Hello Telecom (UK) Limited | 1 | 01821 448XXX |
| ICC Networks Ltd | 1 | 01821 452XXX |
| INTELLIGENT EXCHANGES LIMITED | 1 | 01821 440XXX |
…and 11 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 37 blocks Ofcom lists, 13 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 01821 4… number safe?
A local-looking number is never proof of who is calling: fraudsters spoof 01821 caller IDs so their calls look like they come from Kinrossie (‘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 01821 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 01821 number ranges
Full 01821 Kinrossie area-code guide › · All UK area codes ›