Unknown Caller
1 month ago
Went to voicemail - no message left
Community overview
Community rating:
Mixed
3 user reports
First reported 16 Jul 2026
·
Last reported
1 month
ago
About this number
Number formats
- UK format: 020 3504 6756
- International: +44 20 3504 6756
Number details
- Number type: Landline
- Number range allocated to: Core Telecom Limited
- Area: London
- Area code: 020
Recent activity
UK visits
User Reports
Last 30 days: 66 UK visits and 0 public reports.
User Reports (3)
Scam/Fraud
1 month ago
Said they were from Sky offering to reduce my package to £50 a month. I challenged them and the call ended.
Spam
2 months ago
Offered 40% discount on sky, they asked if I knew how much my monthly bill is, when I said I didn't they hung up.
Report this number
↑ Back to reportsHow to Block This Number
On iPhone
- Open the Phone app and go to Recents
- Find the number 020 3504 6756 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 3504 6756
- 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 registration