- Prefix
01877 4- Area
- Callander
- Number type
- Geographic landline (01/02)
- Format
01877 4XXXXX- From abroad
+44 1877 4XXXXX- Ofcom blocks in range
- 64
- Blocks in service
- 19
- Range holders
- 19
What are 01877 4XXXXX numbers?
Any UK number matching 01877 4XXXXX sits in the
01877 dialling code for Callander.
Ofcom hands these numbers to communications providers in blocks; this range
contains 64 blocks, of which
19 are allocated and usable. Calls from these
numbers are typically homes and businesses in the Callander area — or
organisations elsewhere that keep a local 01877 presence using
VoIP.
Who holds 01877 4… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| Adepteo Limited | 1 | 01877 446XXX |
| Colt Technology Services | 1 | 01877 442XXX |
| Content Guru Limited | 1 | 01877 423XXX |
| Convergence Group (wireless) Networks Limited | 1 | 01877 428XXX |
| Datazero Ltd | 1 | 01877 422XXX |
| Digitech Solutions Global Limited | 1 | 01877 420XXX |
| Fuse 2 Communications Ltd | 1 | 01877 445XXX |
| IOVOX Limited | 1 | 01877 421XXX |
| Invoco Ltd | 1 | 01877 424XXX |
| Kalnet4U Ltd | 1 | 01877 426XXX |
| Minotaur Telecom Limited | 1 | 01877 425XXX |
| Nationwide Telephone Assistance Ltd | 1 | 01877 49XXXX |
…and 7 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 64 blocks Ofcom lists, 45 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 01877 4… number safe?
A local-looking number is never proof of who is calling: fraudsters spoof 01877 caller IDs so their calls look like they come from Callander (‘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 01877 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 01877 number ranges
Full 01877 Callander area-code guide › · All UK area codes ›