Scam/Fraud
5 months ago
Claiming to be O2, scammers
Community overview
Community rating:
Negative
4 user reports
First reported 23 Feb 2026
·
Last reported
5 months
ago
About this number
Number formats
- UK format: 020 8081 5911
- International: +44 20 8081 5911
Number details
- Number type: Landline
- Number range allocated to: Colt Technology Services
- Area: London
- Area code: 020
User Reports (4)
Scam/Fraud
5 months ago
They said from O2 but when I connected to O2 for the first time they said not to pick up any numbers claiming they are from O2
Reported caller:
K
Scam/Fraud
6 months ago
Hung up when I asked who they were calling
Scam/Fraud
7 months ago
Indians pretending to be from O2 even though I don’t own an o2 line
Report this number
↑ Back to reportsHow to Block This Number
On iPhone
- Open the Phone app and go to Recents
- Find the number 020 8081 5911 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 8081 5911
- 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