020 3355 6803
Also shown as:
- 020 3355 6803
- +44 20 3355 6803
AI Summary
Based on 3 community reports
This London number has a mixed but concerning pattern of reports. While the spam score is moderate, user reports describe a range of unusual and potentially disturbing behaviours. Some users report the caller hanging up when challenged, while others describe silent calls. One report details explicit heavy breathing before the caller disconnected. While it's unclear what the exact purpose of these calls are, the reports suggest it's best to block the number to avoid further unwanted or offensive contact.
3 verified reports
Cumulative spam score based on all reports up to each month. Higher percentage means higher reported scam risk. Cumulative spam score based on all reports up to each week. Higher percentage means higher reported scam risk. Cumulative spam score based on all reports up to each day. Higher percentage means higher reported scam risk.
Most helpful reports
3 totalA total scam, they didnt like me calling them out.
Called me and didn't leave a number.
Heavy breathing of an explicit sexual style then they hung up.
Share Your Experience
Help others by reporting what happened
About 020 3355 6803
What type of number is 020 3355 6803?
The phone number 020 3355 6803 (also written as +44 20 3355 6803) is a UK landline number originating from the London area in Greater London . Calls to this number are charged at standard UK landline rates, usually included in call packages.
Is 020 3355 6803 safe to answer?
Based on 3 community reports, this number has received mixed reports from our community. The current risk score is 66% with 1 report marking it as spam .
Be cautious when answering calls from this number. Verify the caller's identity before sharing any information.
More on nuisance calls
Safety Score
Details
- Tel Number
- 020 3355 6803
- Country
- 🇬🇧 United Kingdom
- Network
- Magrathea Telecommunications
- Area
- London
- Type
- Geographic
- First Seen
- 18 Feb 2026
Protection Guides
How to Block This Number
Step-by-step instructions for iPhone, Android, and landlines
HMRC Tax Scam Calls
How fraudsters pretend to be HMRC and threaten arrest over fake tax debts, or offer bogus refunds to steal your details. How to spot them and what to do.
Bank Impersonation Calls
How fraudsters pose as your bank's fraud team, spoof their number, and trick you into moving money. What to look out for and what to do.
Still Getting Calls Despite TPS?
Why you might still receive calls after registering with TPS, and what you can do about overseas scammers ignoring the register.
Location
London, United Kingdom
This number originates from the London area code region. The map shows the general geographic area, not an exact location.
Call Types
Breakdown of reported call reasons. Larger segments and bars represent a bigger share of reports.
Is this your number?
Claim ownership to manage reports
We'll verify ownership via callback or documentation