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Medium risk
07403691833
AI Summary
Based on 1 community report
Calls from this UK mobile number on the Three network are a suspicious cold call. The caller claimed your home needed an insulation certificate update and seemed to know your name and address. They said an engineer would need access to the house and that their ID would be checked by a police officer friend. No visit materialised, and a return call found the number unobtainable. This pattern fits a tactic used to gain entry by pressuring you with authority and urgency. If you don’t recognise the caller, do not grant access or share personal details. Verify work through official channels and block the number. Unobtainable on callback
Written automatically by AI from the community reports on this page. It does not set the spam score, and it can make mistakes, so read the reports below as well.
1 moderated report
Every report is checked before it is published and counted towards the score. How moderation works
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
1 totalSubmitted by users and shown as written, so wording and spelling are their own. Each report is checked before it appears.
Cold Caller claimed their company had installed insulation some years ago and were now required to update the certificate and required access to the house. Knew name and address and said person would call following day. Caller was informed that the engineer would need to carry identification which would be checked by a police officer friend who was visiting me. No visit materialised so suspected attempt to access the building. Same number or similar call should be treated as dangerous A call back to this number showed number as unobtainable
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How this page was checked
This page is generated dynamically from community reports and lookup activity, and changes as new reports arrive. The risk score is based on community reports about calls and texts from this displayed number. It is not based on official records of who owns the number.
- Reports moderated by
- CallerCheck Moderation Team
- Safety guidance reviewed by
- CallerCheck Editorial Team
- AI summary
- Generated from approved community reports only
- Last report received
- 16 Oct 2026
- Last reviewed
- 16 Oct 2026
- AI summary last generated
- 16 Oct 2026
- Last materially updated
- 16 Oct 2026
What do these dates mean?
Report and lookup dates come from user activity. Review dates show when CallerCheck last checked the page. We use “last materially updated” only for meaningful page changes, not cosmetic changes.
- First seen:
- when this number first appeared on CallerCheck, through its first lookup or report.
- Last report received:
- the most recent approved community report for this number.
- Last lookup:
- the most recent time a user searched for this number.
- AI summary last generated:
- when the AI summary on this page was last rewritten from the approved community reports.
- Last reviewed:
- the most recent human moderation or editorial review, where available.
- Last materially updated:
- the most recent meaningful change to this page, such as a new report or a change to its score.
Sources and safety guidance
- Community reports about this number, screened before they are published or counted. How moderation works
- Ofcom numbering allocation data for the network this range belongs to
- Safety guidance aligned with UK scam-reporting advice, such as Report Fraud (formerly Action Fraud) guidance, forwarding spam texts to 7726, and the 159 banking helpline where relevant. Where to report a nuisance call
Important limits
Caller ID can be spoofed, so a high risk rating means people have reported suspicious activity involving this displayed number. It does not prove that the registered owner of the number made the call or text. Community reports describe individual experiences and are not official confirmation of a scam. How caller ID spoofing works.
Own or manage this number? If this number belongs to you or your organisation, you can claim or dispute this profile. We review claims, check supporting information, and may update the page if reports appear to involve spoofing, mistaken identity, or outdated information. Claim or dispute this number
About 07403 691833
What type of number is 07403 691833?
The phone number 07403691833 (also written as +44 7403 691833) is a UK mobile number . Calls to this number are charged at standard mobile rates, usually included in your minutes allowance.
Is 07403 691833 safe to answer?
Based on 1 community report, this number has received mixed reports from our community. The current risk score is 50% .
Be cautious when answering calls from this number. Verify the caller's identity before sharing any information.
What this data can and cannot tell you
The reports on this page come from members of the public about calls and texts that showed this number. Caller ID can be spoofed, so the person contacting you may not be the genuine holder of the number, and a legitimate number can be misused. Before paying anything or acting on a message, check the claim with the organisation involved using contact details from its official website or letters, never the ones in the message itself.
More on nuisance calls
Safety score
1 reportHow this score was worked out
Each report rates the number as safe, unknown, suspicious or spam. The score combines those ratings, giving more weight to clear scams, and each person counts once. A number only reaches high risk once several people have independently reported it. Scores of 70% and above count as high risk, 40% to 69% as medium, and below 40% as low; a low-risk number reads Maybe Safe once someone reports it as safe. More about spam scores
Details
- Tel Number
- 07403 691833
- Country
- 🇬🇧 United Kingdom
- Network
- Three
- Area
- UK Mobile
- Type
- Mobile
- Coverage
- UK-wide, no fixed location
- Cost to call
- Standard mobile rate
- First Seen
- 14 Oct 2026
Network shows the operator this number range is allocated to, which is public information from Ofcom. The caller may be on a different network if the number was moved or spoofed. First Seen is the date this number first appeared on CallerCheck.
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Call Types
Breakdown of reported call reasons. Larger segments and bars represent a bigger share of reports.
Protection Guides
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