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A Reverse Telephone Lookup Of Unwanted Calls is a free reverse telephone database of phone numbers reported to be from telemarketers, scammers, and bill collectors for the United Kingdom. Over 20,743 complaints have been reported to date.

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London, England

Did you get a call from 020-3411-9930?  Read the comments below to find out information about this number. You can also report unwanted calls to help identify callers.
Stephen Wyatt
December 27, 2018, 10:33 am

No call received from this number however it is the number provided for SCAM Microsoft windows registration support. It pops up in the browser and does not allow you to exit it. Also voice message says if you do not phone in 5 minutes, windows will be disabled.

Caller Company: "Microsoft"
Caller Type: Scammer
Steve Evans
January 23, 2019, 9:49 am

I totally agree with Stephen Wyatt. An authentic looking screen appeared with system alerts, depictions of files moving quickly and vertically in the background and warnings that my computer had been disabled as the Microsoft license was invalid. All apparently caused by a malware virus. This number was given as a support number. Needless to say I took no notice. The only way to exit this was to press the OFF button on my computer and re-boot. It's fine now!!!

Lauren Crilly
April 12, 2019, 10:46 am

I experienced the same thing. I also noticed some tiny errors in the grammar on the pop up which was the first red flag. I called the number to see what they would say and of course they wanted to share access, which I did not do. I also rebooted and all was fine. Beware!


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