Unknown Caller
4 months ago
Called several times with main number then followed with Unknown
Community overview
Community rating:
Mixed
3 user reports
First reported 4 Feb 2026
·
Last reported
4 months
ago
User Reports (3)
Telemarketer
6 months ago
i told them NO.but has resulted in over a hundred unwanted calls.
Telemarketer
6 months ago
Telesales for internet provider.
Report this number
↑ Back to reportsHow to Block This Number
On iPhone
- Open the Phone app and go to Recents
- Find the number 020 4621 6659 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 4621 6659
- 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 4621 6659
- International: +44 20 4621 6659
Number details
- Number type: Landline
- Number range allocated to: Colt Technology Services
- Area: London
- Area code: 020