020 8072 7510
Scam/FraudClaiming to be CDC with a one time pass code and a phone number of you didn't ask for it
28 reports
• Last report 11 minutes ago
This number is a landline operated by Colt Technology Services and located in London, England. The overall user rating for this number is Neutral. The number 02038787423 has been searched 91 times, with 5 user comments helping to identify the caller's intent.
Your comment helps others identify this number. Thank you for contributing!
At a glance
Community signals
- Community rating: Neutral
- User reports: 5 user reports
- Searches: 91
- Last reported: 7 months ago
- First reported: 7 months ago
- Typical call time: before 3pm (94% of calls)
Number profile
- UK format: 020 3878 7423
- International: +442038787423
- Number type: Landline
- Carrier: Colt Technology Services
- Area: London
- Area code: 020
User Reports (5)
Your reports help others decide whether to answer calls from this number. Share your experience to help the community!
Scam/Fraud
16 Dec 2025
Said they were EE and I could get 40% discount as signal was poor in my area. They sent me an email which looked just like an EE email and asked to provide a code to reset password. There was a warning on the email. I questioned it and the caller said he’d call back. I called EE and they said it was a scam. Nevertheless the scammers tried to call me back several times - even when I asked them not to.
Unknown Caller
15 Dec 2025
Said they were EE and I was selected to get 40% off my bills. I hung up.
Unknown Caller
13 Dec 2025
Called but didn’t leave a voicemail. Didn’t recognise so didn’t answer.
Reported locations
Reported from 21 UK cities
Dudley, Taunton, London, Barry, Hook, Dundee, Chilworth, Hayes, Egham, Saint Andrews Quay, Manchester, Hale Barns, Dorchester, Faversham, Sidcup, Edgware, London, Herne Bay, Pelsall, Birmingham, Hoddesdon
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How to Block This Number
On iPhone
- Open the Phone app and go to Recents
- Find the number 020 3878 7423 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 3878 7423
- 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 registrationLatest reports
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Scam/FraudConstantly calling and not making any sense, they call at 7pm! . Save yourself the hassle and block them immediately.
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• Last report about 1 hour ago
01228 935358
Unknown CallerScam call center
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• Last report about 1 hour ago
0141 674 0864
Scam/FraudHad several calls from this number and others from this company. They state they from o2 customer care suggestions...
1 report
• Last report about 1 hour ago
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Call Costs
Calling 02038787423 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 02038787423 directly.
International callers should dial +44 20 3878 7423 or 0044 20 3878 7423. No leading zero is required when dialling abroad, e.g., +44(0)2038787423.