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020 3977 8825 Negative Who called me from this phone number?

London • Colt Technology Services
This number is a landline operated by Colt Technology Services and located in London, UK. The overall user rating for this number is Negative. The number 02039778825 has been searched 59 times, with 2 user comments helping to identify the caller's intent.
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At a glance

Community signals

  • User reports: 2 user reports
  • Searches: 59
  • Last reported: 9 months ago
  • First reported: 9 months ago
  • Typical call time: before 1pm (95% of calls)

Number profile

  • Number type: Landline
  • Carrier: Colt Technology Services
  • Area: London
  • Area code: 020

User Reports (2)

Your reports help others decide whether to answer calls from this number. Share your experience to help the community!

Scam/Fraud
28 Jul 2025

Pretending to be Network 3 offering discounts on sim plans. Be very aware of these scammers!

Caller: Daniel
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Scam/Fraud
26 Jul 2025

This number is no longer associated with Colt Technology Services. It’s now being used by scammers impersonating Three (3) – though they oddly refer to the old Hutchison 3G branding, which hasn't been used in years. If you receive a call from this number, do not share any personal or account details. It’s a scam – plain and simple. Block the number and report it. Stay vigilant and spread the word.

Caller: Some Indian women
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Share your experience

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What type of call was it?

Reported locations

Reported from 21 UK cities

Stratford, Abergavenny, Cardiff, Southport, Pudsey, Luton, Combe Martin, Blackburn, West Wickham, London, New Malden, London (City of Westminster), Barnet, Boston, Chapel Allerton, Guildford, Leigh-on-Sea, Colinton, Gillingham, Beaumaris, Erith

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How to Block This Number

On iPhone

  1. Open the Phone app and go to Recents
  2. Find the number 020 3977 8825 and tap the info icon (i)
  3. Scroll down and tap Block this Caller
  4. Confirm by tapping Block Contact

On Android

  1. Open the Phone app and tap the 3-dot menu
  2. Go to Call history or Recents
  3. Long press on 020 3977 8825
  4. 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

Latest reports

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Call Costs

Calling 02039778825 from a landline may cost up to 16p per minute. Many providers charge a 23p call set-up fee. Call packages often include these types of calls. You might not incur additional charges for calling this number, depending on your provider.

Dialling Instructions

Local UK callers can dial 02039778825 directly.

International callers should dial +44 20 3977 8825 or 0044 20 3977 8825. No leading zero is required when dialling abroad, e.g., +44(0)2039778825.