Number spoofing: why caller ID is not proof
The number on your screen can be misleading. Understand what that means for callbacks, reports and reputation labels.
What you see and who called can be different
Caller ID is the number presented with an incoming call. Spoofing makes that display misleading. A call can appear to use a familiar UK number even when the person assigned that number did not place it.
This is why matching a displayed number to a bank’s website is not sufficient verification. The match tells you that the number belongs in the bank’s published contact information; it does not authenticate the incoming call.
What a lookup can still do
A collection of reports can reveal that people are receiving a similar kind of call showing the same number. That pattern may be useful when deciding how cautiously to respond. It does not establish that the subscriber controls the suspicious calls.
Read a number page as a record of experiences associated with the displayed number. Consider report dates, possible number reassignment and whether contributors verified their claims independently.
Avoid confronting the subscriber
Calling back to accuse the person who answers can harm someone who has no involvement. Do not publish a private identity or address based on a number search, and do not encourage others to harass a number.
If you report a call, say what appeared on the screen and what the caller claimed. That wording keeps the observation separate from an assumption about ownership.
Verify important requests another way
End the incoming call and choose an independent route to the organisation. Use its genuine app or contact details you already trust. Do not accept a transfer within the suspicious call as an independent check.
If your own number appears in reports
Use our correction and removal process. Explain the issue and identify the relevant page or report. Do not post identity documents publicly. Moderators can review the wording and whether a clarification, restriction or removal is justified.
Telecom providers continue to develop anti-spoofing protections, but a website lookup cannot guarantee the authenticity of an individual call. Treat requests for money, codes or access according to their content as well as the displayed number.
Sources & further reading
For a situation involving money already sent, contact your bank promptly using contact details you trust.
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