6463 3904 — Spam Report / 垃圾電話報告

About this number / 關於此號碼

6463 3904 often repeats urgent account, parcel, or payment problems, which is why many users read it as a high-risk suspicious call. If you are willing to share more, add your observations about 6463 3904 on the report page. Even when calls go unanswered, 6463 3904 is logged by users as a reference point.

社群回報顯示 6463 3904 多以要求即時處理帳戶、快件或付款問題作招徠，屬高風險的可疑來電。 若你願意分享更多資訊，可在報告頁補上對 6463 3904 的觀察。 即使未必每次接聽，6463 3904 仍被不少用戶記錄下來作參考。

What to do / 應對方法

Do not return calls to unknown numbers. If you did not expect this call, it is best to ignore it. You can block this number on your phone.
不要回撥陌生號碼。如果你沒有預期此來電，最好忽略它。你可以在手機上封鎖此號碼。

How to block / 如何封鎖

iPhone: Settings → Phone → Blocked Contacts → Add New.
Android: Recent Calls → tap the number → Block / Report spam.