I use a blocking app for spam and scam call filtering. This number popped up as scam straight away, did not answer and no message left. Search suggest o2 scam call, location London. Worth noting they usually change the last 4 digits of call number.
Community overview
4 user reports
About this number
Number formats
- UK format: 020 3905 3830
- International: +44 20 3905 3830
Number details
- Number type: Landline
- Number range allocated to: Gamma Telecom Holdings Limited
- Area: London
- Area code: 020
Recent activity
Last 30 days: 20 UK visits and 0 public reports.
Reported categories
Based on 4 public user reports
User Reports (4)
No message left. Total scam.
they called me every other day. I picked up today, a lady called Lisa answered and said shes with o2 mobile, wanting my password so they could do “maintenance”, and as a reward would give me 6 months data free. Blatant scam 😭 but incase they figure out something more believable and call others, I thought this would be helpful to know not to believe anything they tell you.
Every day keeps calling. Never leaves a message. Shows as suspected spam on phone.
Report this number: 020 3905 3830
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How to Block This Number
On iPhone
- Open the Phone app and go to Recents
- Find the number 020 3905 3830 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 3905 3830
- 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