029 2254 1857
Unknown CallerNothing, answered and it went dead
1 report
• Last report 2 minutes ago
This number is a freephone number operated by Colt Technology Services. The overall user rating for this number is Negative. The number 08000584621 has been searched 749 times, with 6 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: Negative
- User reports: 6 user reports
- Searches: 749
- Last reported: 8 months ago
- First reported: almost 4 years ago
- Typical call time: after 11am (63% of calls)
Number profile
- UK format: 0800 058 4621
- International: +448000584621
- Number type: Freephone
- Carrier: Colt Technology Services
- Area: Freephone number
- Area code: 0800
User Reports (6)
Your reports help others decide whether to answer calls from this number. Share your experience to help the community!
Scam/Fraud
02 Dec 2025
Called by a serious sounding chap claiming to be from "Charing Cross Police Station". He addressed me by my surname and claimed they had someone in custody who had tried to use my bank cards. The conversation swiftly turned to "do you have a crypto wallet?". Strung him along for a while and then he abrubtly hung up before I could tell him to Foxtrot Oscar.
Scam/Fraud
05 May 2023
Indian man called and said he was from o2 and was offering new and loyal customers 40% off. I said I wasn’t on o2 and they hung up. Silly silly man.
Scam/Fraud
11 Oct 2022
Indian lady called and said she was from o2 and was offering me 40% off my current contract, she wanted me to click the link in a text which she was going to send to confirm my identity, she hung up after I’d told her I work for 02 and we don’t currently have any deals of that kind!! Scammers
Reported locations
Reported from 21 UK cities
Cheltenham, Havant, Nuneaton, London, Auchterarder, Sheffield, Newry, Leicester, Bristol, Kidderminster, Camberley, Brighton, Hertford, Hale Barns, Ash Vale, Earlsfield, Brockley, Romford, Knaphill, London (Walthamstow), Leyland
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How to Block This Number
On iPhone
- Open the Phone app and go to Recents
- Find the number 0800 058 4621 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 0800 058 4621
- 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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Recommended Guides
Call Costs
Calling 08000584621 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 08000584621 directly.
International callers should dial +44 800 058 4621 or 0044 800 058 4621. No leading zero is required when dialling abroad, e.g., +44(0)8000584621.