020 7864 6537
Also shown as:
- 020 7864 6537
- +44 20 7864 6537
AI Summary
Based on 3 community reports
Calls from this London number seem to be aimed at scamming people by claiming to be from Three Mobile. Reports indicate that callers tell recipients their SIM will be deactivated within 24 hours and ask for personal details. It's alarming that all three reports highlight the same deceptive tactic. Moreover, the fact that one caller mentioned they're not even with Three raises more suspicion. With a spam score of 90, it's clear this number isn't trustworthy. If you receive a call from this number, it’s best to hang up and block it to avoid potential scams.
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 totalSaid they were from Three and that my sim would be deactivated in the next 24 hours and they needed to take some details. Told them I didn’t believe them and hung up.
Said they were from THREE and told me my number would be taken off the network in the next 24 hours
Said they were from Three and that the SIM card is being deactivated. I'm not even with Three!!
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About 020 7864 6537
What type of number is 020 7864 6537?
The phone number 020 7864 6537 (also written as +44 20 7864 6537) 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 7864 6537 safe to answer?
Based on 3 community reports, this number has been frequently reported as spam or a potential scam. The current risk score is 90% with 3 reports marking it as spam .
Exercise extreme caution if you receive a call from this number. Do not share personal or financial information.
More on nuisance calls
Safety Score
Details
- Tel Number
- 020 7864 6537
- Country
- 🇬🇧 United Kingdom
- Network
- Colt Technology Services
- Area
- London
- Type
- Geographic
- First Seen
- 21 Feb 2026
Protection Guides
How to Block This Number
Step-by-step instructions for iPhone, Android, and landlines
Caller ID Spoofing
Scammers can make any number appear on your phone, including your bank's real one. How spoofing works, how to spot it, and what to do if your own number is being used.
Report to Ofcom
How to report nuisance calls officially
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.
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