Scam/Fraud
7 months ago
Claims to be from three
Community overview
Community rating:
Mixed
4 user reports
First reported 6 Jan 2026
·
Last reported
7 months
ago
User Reports (4)
Unknown Caller
7 months ago
Never answer this number, but it keeps ringing from time to time. No messages.
Unknown Caller
7 months ago
Ringing Daily, dont leave a message
Unknown Caller
8 months ago
Daily
Report this number
↑ Back to reportsHow to Block This Number
On iPhone
- Open the Phone app and go to Recents
- Find the number 020 4540 6430 and tap the info icon (i)
- Scroll down and tap Block this Caller
- Confirm by tapping Block Contact
On Android
- Open the Phone app and tap the 3-dot menu
- Go to Call history or Recents
- Long press on 020 4540 6430
- Select Block number or Block/report spam
On Landline Phones
Several options are available for UK landlines:
- BT Call Protect - free for BT customers
- TalkTalk CallSafe - free for TalkTalk customers
- Call blocking devices like CPR Call Blocker (available on Amazon)
Register with TPS (Telephone Preference Service)
The TPS is a free service for UK consumers that allows you to opt out of unsolicited sales and marketing calls.
Learn more about TPS registrationAbout this number
Number formats
- UK format: 020 4540 6430
- International: +44 20 4540 6430
Number details
- Number type: Landline
- Number range allocated to: Colt Technology Services
- Area: London
- Area code: 020