- Prefix
01436 6- Area
- Helensburgh
- Number type
- Geographic landline (01/02)
- Format
01436 6XXXXX- From abroad
+44 1436 6XXXXX- Ofcom blocks in range
- 37
- Blocks in service
- 17
- Range holders
- 15
What are 01436 6XXXXX numbers?
Any UK number matching 01436 6XXXXX sits in the
01436 dialling code for Helensburgh.
Ofcom hands these numbers to communications providers in blocks; this range
contains 37 blocks, of which
17 are allocated and usable. Calls from these
numbers are typically homes and businesses in the Helensburgh area — or
organisations elsewhere that keep a local 01436 presence using
VoIP.
Who holds 01436 6… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| BT | 3 | 01436 63XXXX |
| 24 Seven Cloud Communications Ltd | 1 | 01436 614XXX |
| Adepteo Limited | 1 | 01436 616XXX |
| Alnitak GmbH | 1 | 01436 613XXX |
| DRD Communications Limited | 1 | 01436 680XXX |
| Dial 9 Communications Limited | 1 | 01436 615XXX |
| EVE CONNECT LTD | 1 | 01436 618XXX |
| Flextel Limited | 1 | 01436 62XXXX |
| GCI Network Solutions Limited | 1 | 01436 66XXXX |
| Gamma Telecom Holdings Limited | 1 | 01436 64XXXX |
| ICUK Computing Services Limited | 1 | 01436 619XXX |
| Linear Telecoms Limited | 1 | 01436 610XXX |
…and 3 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, 20 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 01436 6… number safe?
A local-looking number is never proof of who is calling: fraudsters spoof 01436 caller IDs so their calls look like they come from Helensburgh (‘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 01436 6XXXXX 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 01436 number ranges
Full 01436 Helensburgh area-code guide › · All UK area codes ›