Unknown Caller
6 months ago
Call lasted about 5 seconds, dead line and no response
Community overview
Community rating:
Limited data
2 user reports
First reported 15 Oct 2025
·
Last reported
6 months
ago
User Reports (2)
Scam/Fraud
15 Oct 2025
Name seems to be scam party - no one spoke (nor did I whilst waiting)
Report this number
How to Block This Number
On iPhone
- Open the Phone app and go to Recents
- Find the number 020 3957 9400 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 3957 9400
- 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)
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Learn more about TPS registrationAbout this number
Number formats
- UK format: 020 3957 9400
- International: +44 20 3957 9400
Number details
- Number type: Landline
- Number range allocated to: Gamma Telecom Holdings Limited
- Area: London
- Area code: 020