Legitimate
4 months ago
nuisance call
Community overview
Community rating:
Mixed
5 user reports
First reported 1 Apr 2026
·
Last reported
4 months
ago
About this number
Number formats
- UK format: 020 3743 6959
- International: +44 20 3743 6959
Number details
- Number type: Landline
- Number range allocated to: Colt Technology Services
- Area: London
- Area code: 020
User Reports (5)
Unknown Caller
4 months ago
Unknown London number called unexpectedly and left no clear reason. I would not call it back.
Scam/Fraud
5 months ago
Claimed to be from Virgin media. Did a search but the number did not match. So very possibly a scam of sorts. I admit I did not listen long enough or respond in order to get more information.
Unknown Caller
5 months ago
Did not recognise the number so i dont answer, first time this number has called have no idea why have never heard of colt technologies. I only know now who the number is having done this search.
Unknown Caller
5 months ago
My phone is on Do not disturb so I only get a report of the number that called. They did not leave a message.
Report this number
↑ Back to reportsHow to Block This Number
On iPhone
- Open the Phone app and go to Recents
- Find the number 020 3743 6959 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 3743 6959
- 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